DISPLAY DEVICE

Abstract

A display device (1000) comprises: a substrate (110) having a display area (AA) and a non-display area (NA); a pixel driver circuit (PD) provided in the display area (AA); first electrodes (CE1) connected to the pixel driver circuit (PD); light emission devices (ED) provided on the first electrodes (CE1); and second electrodes (CE2) provided on the light emission devices (ED), wherein the pixel driver circuit (PD) comprises: a sensing circuit configured to provide a cathode voltage or a touch drive signal (TDS) to the second electrodes (CE2); and a sensing switch (430) configured to transfer energy from a power circuit (500) to the sensing circuit in response to a touch drive signal (Touch_EN), or to block energy transferred from the power circuit (500).

Description

AREA OF TECHNOLOGY

[0001] The present disclosure relates to a display device. BACKGROUND

[0002] A display device can be used in various electronic devices, such as TVs, mobile phones, laptops and tablets, etc.

[0003] Display devices can include organic light-emitting displays (OLEDs), which emit light themselves, and liquid crystal displays (LCDs), which require separate light sources.

[0004] Recently, a display device featuring a light-emitting diode (LED) has attracted attention as a next-generation display device, in which the LED is made of an inorganic material rather than an organic one. Compared to liquid crystal displays or organic light-emitting displays, a display device with such a LED can have a faster illumination speed, excellent luminous efficacy, and can display an image with high luminance. BRIEF EXPLANATION

[0005] According to one aspect, a display device is provided which comprises: a substrate having a display area and a non-display area; a pixel driver circuit provided in the display area; one or more first electrodes connected to the pixel driver circuit; one or more light emission devices provided on the one or more first electrodes; and a plurality of second electrodes provided on the one or more light emission devices, wherein the pixel driver circuit comprises: a sensing circuit configured to provide a cathode voltage or a touch drive signal to the second electrodes;and a sensing switch configured to transfer energy from a power circuit to the sensing circuit in response to a touch activation signal, or to block energy being transferred from the power circuit. Further embodiments are described in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The accompanying drawings, which are included to provide a further understanding of the revelation and which are incorporated into and form part of this application, illustrate implementations of the revelation and, together with the description, serve to explain the principle of revelation. Fig. Figure 1 is a perspective view showing a display device according to an implementation of the present disclosure; Fig. 2 is a top view of a display device according to an implementation of the present disclosure; Fig. Figure 3 is an enlarged exemplary diagram of a section of a display device according to an implementation of the present disclosure; Fig. Figure 4 is an exemplary diagram showing the structure of a pixel driver circuit used in a display device according to an implementation of the present disclosure; Fig. 5 to Fig. 7B are top views of a display panel used in a display device according to an implementation of the present disclosure; Fig. Figure 8 is an exemplary diagram showing a cross-sectional area of ​​a display panel used in a display device according to an implementation of the present disclosure; Fig. Figure 9 is a cross-sectional view of a light emission device used in a display device according to an implementation of the present disclosure; Fig. Figure 10 is an exemplary diagram showing the structure of a touch electrode part and a display driver used in a display device according to an implementation of the present disclosure; Fig. Figure 11A is an exemplary diagram showing structures of a sub-touch electrode and a pixel driver circuit used in a display device according to an implementation of the present disclosure; Fig. Figure 11B is an exemplary diagram showing a connection structure of a sub-touch electrode and a pixel driver circuit used in a display device according to an implementation of the present disclosure; Fig. Figure 11C is an exemplary diagram showing a connection relationship between a pixel driver circuit and light emission devices used in a display device according to an implementation of the present disclosure; Fig. Figure 11D is an exemplary diagram showing a light emission signal applied to a display device according to an implementation of the present disclosure; Fig. Figure 11E is an exemplary diagram showing a pixel circuit used in a display device according to an implementation of the present disclosure; Fig. Figure 11F is an exemplary diagram showing a touch detection method for a display device according to an implementation of the present disclosure; Fig. Figure 11G is an exemplary diagram showing a display period and a touch detection period applied to a display device according to an implementation of the present disclosure; Fig. 12A to Fig. Figure 12E are exemplary diagrams showing different control methods of a display device according to an implementation of the present disclosure; and Fig. 13 to Fig. Figure 16 are diagrams showing electronic devices in which a display device is used in accordance with implementations of the present disclosure.

[0007] Throughout the drawings and the detailed description, unless otherwise specified, the same drawing reference symbols are to be understood as referring to the same elements, features, and structures. The relative size and representation of these elements may be exaggerated for the sake of clarity, illustration, and practicality. DETAILED DESCRIPTION

[0008] Implementations of the present disclosure are directed to providing a display device that can block energy supplied to a sensing circuit (e.g., a touch sensing circuit) when the sensing circuit does not output a touch control signal to a touch electrode during a touch sensing period. By blocking energy to the sensing circuit when it does not output the touch control signal to the touch electrode during the touch sensing period, implementations of the present disclosure can therefore provide a display device with reduced energy consumption compared to conventional display devices.

[0009] Additional advantages and features of the disclosure are partly set forth in the following description and partly become apparent to the average person skilled in the art upon evaluation of what follows or can be learned from the practical application of the disclosure. The objectives and other advantages of the disclosure can be realized and achieved through the structure, which is set forth in particular in the written description and the accompanying drawings.

[0010] It is understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide a further explanation of the claimed disclosure.

[0011] The advantages and features of the present disclosure and its implementation methods are clarified by the following exemplary implementations, which are described with reference to the accompanying drawings. The present disclosure can, however, be embodied in different forms and should not be construed as limited to the example implementations set forth herein. Instead, these exemplary implementations are provided so that this disclosure is sufficiently thorough and complete to assist the person skilled in the art in fully understanding the scope of the present disclosure.

[0012] Throughout the drawings and detailed description, unless otherwise specified, the same drawing reference symbols are to be understood as referring to the same elements, features, and structures. The relative size and representation of these elements may be exaggerated for the sake of clarity, illustration, and practicality. The sequence of processing steps and / or operations described is an example; however, the sequence of steps and / or operations is not limited to that shown herein and may be modified as is known in the art, except that steps and / or operations must necessarily occur in a specific order. The same reference symbols consistently denote the same elements.The names of the respective elements used in the following explanations are chosen solely for the convenience of writing the description and may therefore differ from those used in actual products.

[0013] A shape, size, ratio, angle, and number disclosed in the drawings to describe implementations of this disclosure may be provided only as examples. Thus, this disclosure is not limited to the illustrated details. The same reference numerals consistently refer to the same elements. If, in the following description, it is determined that a detailed description of the relevant known function or configuration would unnecessarily obscure the important point of this disclosure, the detailed description of such known function or configuration may be omitted or provided briefly. When "include," "have," and "include" as described in this disclosure are used, another part may be added, unless "only" is used.An element described in a singular form should have a plurality of elements, and vice versa, unless the context clearly indicates otherwise.

[0014] Any implementation described herein as an “example” is not necessarily to be interpreted as preferable or advantageous over other implementations.

[0015] When designing an element, the element is designed to have an error or tolerance range, even though there is no explicit description of such an error or tolerance range.

[0016] When describing a positional relationship, for example, when a positional relationship between two parts is described as "on", "above", "below" and "next", one or more other parts may be positioned between the two parts unless a restrictive term such as "only" or "directly" is used.

[0017] When describing a temporal relationship, for example, when the temporal sequence is described as "after", "subsequent", "next" and "before", a case that is not continuous may be included unless a restrictive term such as "only", "immediately" or "directly" is used.

[0018] It is understood that, although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be restricted by these terms. These terms are used only to distinguish one element from another and may not define any order of sequence. For example, a first element could be called a second element, and similarly, a second element could be called a first element, without departing from the scope of the present revelation.

[0019] When describing elements of the present disclosure, the terms “first”, “second”, “A”, “B”, “(a)”, “(b)”, etc., may be used. These terms are intended to identify the corresponding elements from the other elements, and the basis, sequence, or number of the corresponding elements should not be limited by these terms. The expression that an element is “connected”, “coupled”, or “attached” to another element or layer is to be understood as meaning that the element or layer may not only be directly connected or attached to another element or layer, but may also be indirectly connected or attached to another element or layer, with one or more intervening elements or layers being “arranged” or “inserted” between the elements or layers, unless otherwise specified.

[0020] When a component is described as "connected", "coupled", "attached" or "attached" to another component, that component may be directly connected, coupled, attached or affixed to the other component; however, it is understood that other components may be inserted between the components, which may be indirectly connected, coupled, attached or affixed without a specific description.

[0021] It is understood that if a component or layer is specified as being "in contact" or "overlapping" with another component or layer, the component or layer may be in direct contact or overlapping with another component or layer, but other components may be inserted between each component, which may be indirectly in contact or overlapping without a specific explicit description.

[0022] The term "at least one" is to be understood as encompassing any and all combinations of one or more of the listed elements. For example, the meaning of "at least one of a first element, a second element, and a third element" refers to the combination of all elements that could be derived from two or more of the first element, the second element, and the third element, as well as the first element, the second element, or the third element. Furthermore, the term "may" as used here encompasses all meanings and definitions of the word "may / can".

[0023] “First direction”, “second direction”, “third direction”, “X-axis direction”, “Y-axis direction” and “Z-axis direction” should not only be interpreted as a geometric relationship perpendicular to each other, but may mean that the configuration of the present disclosure has a broader direction within a range in which the configuration of the present disclosure can function functionally.

[0024] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as they are normally understood by a person skilled in the art, including those with exemplary implementations. It is further understood that terms such as those defined in commonly used dictionaries should be interpreted in a way that is consistent, for example, with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.For example, the term "part" or "unit" may be applied to a separate circuit or structure, an integrated circuit, a computing block of a circuit device, or any structure configured to perform a described function as it would be understood by a person skilled in the art.

[0025] Features of different implementations of the present disclosure may be partially or completely coupled or combined with one another and may interact and be technically controlled in various ways, as the person skilled in the art can sufficiently understand.

[0026] The implementations of the present disclosure can be executed independently of one another or can be executed together in a co-dependent relationship.

[0027] The following section describes in detail the implementations of the present disclosure with reference to the attached drawings.

[0028] Fig. Figure 1 is a perspective view showing a display device according to an implementation of the present disclosure.

[0029] With reference to Fig. 1. A display device 1000 according to an implementation of the present disclosure may comprise a display panel 100, a polarization layer 280, an adhesive layer 290, a cover element 120, a support substrate 190, a flexible printed circuit board 170 and a printed circuit board 160.

[0030] The display panel 100 can display information and an image to be provided to a user.

[0031] The polarization layer 280 can be arranged on the display panel 100. The polarization layer 280 can prevent or reduce the amount of light generated by an external light source entering the display panel 100 to affect a light-emitting device or the like.

[0032] The adhesive layer 290 can attach the cover element 120 to the display panel 100. The adhesive layer 290 can be positioned between the polarization layer 280 and the cover element 120 to attach the cover element 120 to the polarization layer 280. The adhesive layer 290 can be an optically clear adhesive (OCA), an optically clear resin (OCR), or a pressure-sensitive adhesive (PSA).

[0033] The cover element 120 can be arranged on the polarization layer 280. The cover element 120 can be arranged on the adhesive layer 290. The cover element 120 can be an element for protecting the display panel 100. The cover element 120 can be made of a transparent material.

[0034] The support substrate 190 can be positioned between the display panel 100 and the printed circuit board 160. The support substrate 190 can increase the rigidity of the display panel 100. The support substrate 190 can serve as a backplate.

[0035] The flexible printed circuit board 170 and the printed circuit board 160 can be arranged on a bottom side of the display panel 100. The flexible printed circuit board 170 and the printed circuit board 160 can also be arranged on an edge of the display panel 100. One side of the flexible printed circuit board 170 can be attached to the display panel 100, and the other side of the flexible printed circuit board 170 can be attached to the printed circuit board 160. The flexible printed circuit board 170 can be a flexible film, but implementations of the present disclosure are not limited to this.

[0036] The printed circuit board 160 can include at least one hole 180. An internal component that detects ambient light or temperature can be located in an area corresponding to the at least one hole 180. For example, the internal component can include at least one ambient light sensor (ALS) and one temperature sensor.

[0037] Fig. 2 is a top view of a display device according to an implementation of the present disclosure, and Fig. Figure 3 is an enlarged exemplary diagram of a section of a display device according to an implementation of the present disclosure.

[0038] With reference to Fig. 2 and Fig. 3. The display device 1000 can include the display panel 100, the flexible circuit board 170 and the circuit board 160.

[0039] The display panel 100 can have a substrate 110. The substrate 110 can be an element that supports other components of the display device 1000. The substrate 110 can be made of an insulating material. For example, the substrate 110 can be made of glass or resin. Furthermore, the substrate 110 can be made of a flexible material. For example, the substrate 110 can be made of a flexible plastic material, such as polyimide (PI).

[0040] For example, the display panel 100 can have a display area AA and a non-display area NA. Therefore, the substrate 110 can have a display area AA and a non-display area NA. The display area AA and the non-display area NA can be applied not only to the description of the substrate 110, but also to the description of the display device 1000.

[0041] The display area AA can be an area in which an image is displayed. The display area AA can have a plurality of pixels PX. Each of the plurality of pixels PX can have a plurality of subpixels. At least one subpixel can be located in each of the plurality of subpixels.

[0042] The type of light-emitting device can be varied based on the type of display device 1000. For example, if the display device 1000 is an inorganic light-emitting display device, the light-emitting device can be a light-emitting diode (LED), a micro-light-emitting diode (Micro-LED), or a mini-light-emitting diode (MLED).

[0043] The display area AA can be configured in various shapes according to the design of the display device 1000. For example, the display area AA can be configured in a rectangular shape with four rounded corners. In another example, the display area AA can be configured in a rectangle with four corners, each of which is either right-angled or circular.

[0044] With reference to Fig. 3. A plurality of pixel driver circuits PD can be arranged in the display area AA. The plurality of pixel driver circuits PD can be circuits for controlling light emission devices provided in the plurality of subpixels.

[0045] Each of the plurality of pixel driver circuits (PD) can include a storage capacitor and a plurality of transistors, including a driver transistor. Additionally, each of the plurality of pixel driver circuits (PD) can control the light emission operation of the plurality of light emission devices by providing a control signal, a power source, and a driver current for the light emission devices located in the plurality of subpixels. For example, the pixel driver circuit (PD) can include a power line and a signal line for controlling the light emission on / off and / or light emission time of the light emission device. For example, the plurality of pixel driver circuits (PD) can be fabricated using a metal-oxide-silicon field-effect transistor (MOSFET) fabrication process on a semiconductor substrate.

[0046] The non-display area (NA) can be an area where no image is displayed. Various lines, circuits, and the like for controlling the majority of pixels (PX) of the display area (AA) can be located in the non-display area (NA). For example, various lines and driver circuits can be located in the non-display area (NA). Additionally, a pad (PAD) to which an integrated circuit, a printed circuit, or the like is connected can be located in the non-display area (NA).

[0047] For example, the driver circuit can be a data driver circuit and / or a gate driver circuit. Lines that receive a control signal to control the driver circuits can be located in the non-display area NA. For example, the control signal can include a clock signal, an input data enable signal, and synchronization signals. The control signal can be received by the pad part PAD. For example, interconnect lines LL for transmitting a signal can be located in the non-display area NA. For example, a driver component, such as the flexible printed circuit board 170 and the printed circuit board 160, can be connected to the pad part PAD.

[0048] According to the present disclosure, the non-display area NA can comprise a first non-display area NA1, a bending area BA, and a second non-display area NA2. For example, the first non-display area NA1 can be an area surrounding at least one section of the display area AA. The bending area BA can be an area extending from at least one of several sides of the first non-display area NA1 and can be a bendable area. The second non-display area NA2 is an area extending from the bending area BA, and the pad portion PAD can be located within the second non-display area NA2. For example, the bending area BA can be bent, and a remaining area of ​​the substrate 110, excluding the bending area BA, can be flat. In this case, if the bending area BA is bent, the second non-display area NA2 can be located on a rear side of the display area AA.

[0049] A plurality of connecting lines LL can be arranged in the non-display area NA. These multiple connecting lines LL can be lines for transmitting various signals from one or more flexible printed circuit boards (or flexible films) 170 and the printed circuit board 160 to the display area AA. The plurality of connecting lines LL can extend from multiple pad electrodes PE of the second non-display area NA2 to the bending area BA and the first non-display area NA1 to be electrically connected to multiple drive lines VL of the display area AA.

[0050] The majority of pixel driver circuits PD can be controlled by signals transmitted from one or more flexible printed circuit boards (or flexible films) 170 and the printed circuit board 160 through the control line VL in the display area AA and the connecting line LL in the non-display area NA.

[0051] For example, each of the control line VL and the connecting line LL can be a line for transmitting a signal output from the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 to the pixel driver circuit PD. The control line VL can be located in the display area AA to be electrically connected to the pixel driver circuit PD. The control line VL can extend from the display area AA to the non-display area NA to be electrically connected to the connecting line LL. Accordingly, the signal output by the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 can be transmitted to the pixel driver circuit PD via the connecting line LL and the control line VL.

[0052] When bending section BA is bent, a section of connecting cable LL may also be bent along with bending section BA. This concentrates stress on a section of the bent connecting cable LL, potentially leading to cracking. Connecting cable LL can be made of a conductive material with excellent ductility to minimize cracking when bending section BA is bent. For example, connecting cable LL could be made of a conductive material with excellent ductility, such as gold (Au), silver (Ag), aluminum (Al), etc. Alternatively, connecting cable LL could be made of one of the various conductive materials used in display section AA. For example, connecting cable LL could be made of molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), an alloy of silver (Ag) and magnesium (Mg), or an alloy thereof.The connecting conductor LL can be formed in a multilayer structure comprising various conductive materials. For example, the connecting conductor LL can be formed in a three-layer structure of titanium (Ti) / aluminum (Al) / titanium (Ti).

[0053] The connecting line LL can be configured in various shapes to reduce stress. At least one section of the connecting line LL located on the bending area BA can extend in the same direction as the extension direction of the bending area BA, or it can extend in a direction different from the extension direction of the bending area BA to reduce stress. For example, if the bending area BA extends in one direction from the first non-display area NA1 to the second non-display area NA2, at least one section of the connecting line LL located on the bending area BA can extend in a direction inclined to that direction.

[0054] As another example, at least one section of the connecting conductor LL can be formed in various patterns. For example, at least one section of the connecting conductor LL, which is arranged on the bending area BA, can have a shape in which a conductive pattern with at least one of a diamond shape, a rhombic shape, a trapezoidal shape, a triangular waveform, a sawtooth waveform, a sinusoidal shape, a circular shape, and an omega shape is repeatedly arranged.

[0055] Therefore, in order to reduce or minimize the stress concentrated on the connecting line LL and the cracking due to the stress, the shape of the connecting line LL can be formed in various shapes, including the shape described above.

[0056] According to the present disclosure, the width of the second non-display area NA2, in which the multiple pad electrodes PE are arranged, can be wider than the width of the bending area BA, in which only the plurality of connecting lines LL are arranged. Likewise, the width of the display area AA, in which the plurality of subpixels are arranged, can be wider than the width of the bending area BA, in which only the plurality of connecting lines LL are arranged. A substrate 110 in which the width of the bending area BA is narrower than the width of other areas of the substrate 110 is described in Fig. 2 and Fig. Figure 3 shows. However, one form of the substrate 110, which has the bending area BA, is exemplary, and thus implementations of the present disclosure are not limited to it.

[0057] A pad part PAD, comprising a plurality of pad electrodes PE, can be located in the second non-display area NA2. A driver component, comprising one or more of the flexible printed circuit boards (or flexible films) 170 and the printed circuit board 160, can be attached to or connected to the pad part PAD. The plurality of pad electrodes PE are electrically connected to one or more flexible printed circuit boards (or flexible films) and can transmit various signals (or power) received by the printed circuit board 160 and the flexible printed circuit board (or flexible film) 170 to the plurality of pixel driver circuits PD in the display area AA.

[0058] The flexible printed circuit board (or flexible film) 170 can be a film that has flexibility, and various components can be arranged on the flexible printed circuit board. For example, a driver IC, such as a gate driver IC or a data driver IC, can be arranged on the flexible printed circuit board (or flexible film). In the following description, the driver IC can be referred to as a control driver.

[0059] The driver IC can be a component that processes data and a drive signal to display an image. The driver IC can be arranged by a method such as a chip-on-glass (COG), a chip-on-film (COF), a tape carrier package (TCP), or the like, but implementations of the present disclosure are not limited to these. The flexible printed circuit board (or flexible film) 170 can be attached to or connected to a plurality of pad electrodes PE by a conductive adhesive layer.

[0060] The printed circuit board 160 can be electrically connected to one or more flexible printed circuit boards (or flexible films) 170 and provide signals to the driver IC. The printed circuit board 160 can be positioned on one side of the flexible printed circuit board (or flexible film) 170 for electrical connection. Various components for providing different signals to the driver IC can be arranged on the printed circuit board 160. For example, various components such as a timing control device, a power circuit, a memory, a processor, etc., can be arranged on the printed circuit board 160. For example, the printed circuit board 160 can include an integrated power management circuit (PMIC).

[0061] Fig. Figure 4 is an exemplary diagram showing the structure of a pixel driver circuit used in a display device according to an implementation of the present disclosure.

[0062] The reference to Fig. The pixel driver circuit PD described in section 3 can be a microdriver (µDriver) that is located in Fig. 4 is shown. Fig. Figure 4 shows that a light emission device ED is connected to a microdriver (µDriver), but is not limited to this.

[0063] For example, eight light-emitting devices (LEDs) can be connected to one microdriver (µDriver). In another example, 16 LEDs can be connected to one microdriver (µDriver), and 32 or 64 LEDs can be connected to one microdriver (µDriver). The LED can be a micro-LED. Additionally, a pixel driver circuit (PD, e.g., a microdriver (µDriver)) can be connected to at least two LEDs. In this case, a pixel driver circuit (PD, e.g., a microdriver (µDriver)) can have one or more pixel circuits (PC) that are configured in Fig. Figure 4 shows that the pixel circuit PC can be connected to at least one light emission device ED. The pixel circuit PC, which is included in the microdriver µDriver, can have a driver transistor TDR and a light emission transistor TEM.

[0064] For example, a high-potential energy voltage VDD can be applied to a first electrode of the driver transistor TDR, a first electrode of the light-emitting transistor TEM can be connected to a second electrode of the driver transistor TDR, and a sampling signal SC can be applied to a gate electrode of the driver transistor TDR. The sampling signal SC applied to the gate electrode of the driver transistor TDR can be a DC power source, and a fixed reference voltage can be applied in each frame.

[0065] The second electrode of the driver transistor TDR can be connected to the first electrode of the light emission transistor TEM, the light emission device ED can be connected to the second electrode of the light emission transistor TEM, and a light emission signal EM can be applied to the gate electrode of the light emission transistor TEM. The light emission signal EM applied to the gate electrode of the light emission transistor TEM can be a pulse-width modulation (PWM) signal that changes in each frame.

[0066] The first electrode of the light-emitting device ED can be connected to the second electrode of the light-emitting transistor TEM, and the second electrode of the light-emitting device ED can be connected to ground. For example, the first electrode of the light-emitting device ED can be an anode electrode and the second electrode of the light-emitting device ED can be a cathode electrode.

[0067] Each of the driver transistor TDR and the light emission transistor TEM can be an n-type or a p-type transistor.

[0068] The driver transistor TDR can be switched on by the sampling signal SC, which is applied by a timing control device T-CON, and the light emission transistor TEM can be switched on by the light emission signal EM. In this case, a drive current can be applied to the light emission device ED by the driver transistor TDR, and to the light emission transistor TEM by the high-potential energy voltage VDD, which is applied to the first electrode of the driver transistor TDR, and thus the light emission device ED can emit light.

[0069] Fig. 5 to Fig. Figure 7B are top views of a display panel used in a display device according to an implementation of the present disclosure. For example, Fig. 5 an enlarged top view of a section of the display area AA, which has a plurality of pixels, Fig. 6 is an enlarged top view of a portion of the display area AA containing a pixel, Fig. 7A is another top view of the area that is in Fig. 5 is shown, and Fig. 7B is a top view showing two second electrodes CE2, which are located in Fig. 7A are shown. A plurality of signal lines TL, a plurality of communication lines NL, a plurality of first electrodes CE1, a plurality of walls BNK and a plurality of light emission devices ED are in Fig. 5 and Fig. 6 shown. Fig. 7A shows two second electrodes CE2 added to the top view shown in Fig. 5 is shown, and Fig. 7B shows two second electrodes CE2, which are in Fig. 7A are shown.

[0070] With reference to Fig. 5 to Fig. 7B can have a plurality of pixels PX, each containing a plurality of subpixels, arranged in the display area AA. Each of the plurality of subpixels has a light-emitting device ED and can emit light independently. The plurality of subpixels can be configured in a plurality of rows and a plurality of columns and can be arranged in a matrix form.

[0071] The plurality of subpixels can have a first subpixel SP1, a second subpixel SP2, and a third subpixel SP3. For example, any one of the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3 can be a red subpixel, another can be a green subpixel, and another can be a blue subpixel. Types of plurality of subpixels are examples, and implementations of the present disclosure are not limited to them.

[0072] Each of the plurality of pixels PX can have one or more first subpixels SP1, one or more second subpixels SP2, and one or more third subpixels SP3. For example, a pixel PX can have a pair of first subpixels SP1, a pair of second subpixels SP2, and a pair of third subpixels SP3.

[0073] The pair of first subpixels SP1 can contain a 1a-th subpixel SP1a and a 1b-th subpixel SP1b. The pair of second subpixels SP2 can contain a 2a-th subpixel SP2a and a 2b-th subpixel SP2b. The pair of third subpixels SP3 can contain a 3a-th subpixel SP3a and a 3b-th subpixel SP3b. For example, a pixel PX can contain the 1a-th subpixel SP1a, the 1b-th subpixel SP1b, the 2a-th subpixel SP2a, the 2b-th subpixel SP2b, the 3a-th subpixel SP3a, and the 3b-th subpixel SP3b.

[0074] The plurality of subpixels that form a pixel PX can be arranged in various ways. For example, in a pixel PX, the pair of first subpixels SP1 can be arranged in the same column, the pair of second subpixels SP2 can be arranged in the same column, and the pair of third subpixels SP3 can be arranged in the same column. The first subpixel SP1, the second subpixel SP2, and the third subpixel SP3 can be arranged in the same row. The number and arrangement of the plurality of subpixels that form a pixel PX are examples, and implementations of the present disclosure are not limited to them.

[0075] The majority of signal lines TL can be located in a region between the majority of subpixels. The majority of signal lines TL can extend in a column direction between the majority of subpixels. The majority of signal lines TL can be lines carrying an anode voltage from the pixel driver circuit PD (shown in Fig. 3) transmitted to the majority of subpixels. For example, the signal line TL can be electrically connected to the pixel driver circuit PD and the first electrode CE1 of the subpixel. The anode voltage output by the pixel driver circuit PD (for example, by the microdriver (µDriver)) can be transmitted to the first electrode CE1 of the subpixel via the signal line TL.

[0076] For example, the first electrode CE1 can be an electrode electrically connected to the anode electrode of the light-emitting device ED. The anode voltage transmitted through the signal line TL can be transferred to the anode electrode of the light-emitting device ED via the first electrode CE1. That is, the first electrode CE1 is connected to the anode electrode. Accordingly, in the following description, the first electrode CE1 can mean the anode electrode or it can mean a separate electrode connected to the anode electrode.

[0077] In the display device according to an example of the present disclosure, instead of forming a plurality of transistors and storage capacitors in each of the plurality of subpixels, the pixel driver circuit PD is used in which the plurality of pixel circuits are integrated, and thus the structure of the display device 1000 can be simplified. Furthermore, since a circuit arranged in each of the plurality of subpixels is integrated in a pixel driver circuit PD, highly efficient and low-power control is possible.

[0078] The majority of signal lines TL can have a first signal line TL1, a second signal line TL2, a third signal line TL3, a fourth signal line TL4, a fifth signal line TL5, and a sixth signal line TL6. Each of the first signal line TL1 and the second signal line TL2 can be electrically connected to the pair of first subpixels SP1. Each of the third signal line TL3 and the fourth signal line TL4 can be electrically connected to the pair of second subpixels SP2. Each of the fifth signal line TL5 and the sixth signal line TL6 can be electrically connected to the pair of third subpixels SP3.

[0079] The first signal line TL1 can be located on one side of the pair of first subpixels SP1, and the second signal line TL2 can be located on the other side of the pair of first subpixels SP1. The first signal line TL1 can be electrically connected to one of the first subpixels SP1 in the pair, for example, the first electrode CE1 of the 1a-th subpixel SP1a. The second signal line TL2 can be electrically connected to the remaining first subpixel SP1 of the pair of first subpixels SP1, for example, the first electrode CE1 of the 1b-th subpixel SP1b.

[0080] The third signal line TL3 can be located on one side of the pair of second subpixels SP2, and the fourth signal line TL4 can be located on the other side of the pair of second subpixels SP2. For example, the third signal line TL3 can be located adjacent to the second signal line TL2. The third signal line TL3 can be electrically connected to one of the pair of second subpixels SP2, for example, the first electrode CE1 of the 2a-th subpixel SP2a. The fourth signal line TL4 can be electrically connected to the remaining second subpixel SP2 of the pair of second subpixels SP2, for example, the first electrode CE1 of the 2b-th subpixel SP2b.

[0081] The fifth signal line TL5 can be located on one side of the pair of third subpixels SP3, and the sixth signal line TL6 can be located on the other side of the pair of third subpixels SP3. For example, the fifth signal line TL5 can be located adjacent to the fourth signal line TL4. The sixth signal line TL6 can be located adjacent to the first signal line TL1, which is connected to the adjacent pixel PX. The fifth signal line TL5 can be electrically connected to one of the pair of third subpixels SP3, for example, the first electrode CE1 of the 3a-th subpixel SP3a. The sixth signal line TL6 can be electrically connected to the remaining third subpixel SP3 of the pair of third subpixels SP3, for example, the first electrode CE1 of the 3b-th subpixel SP3b.

[0082] The signal conductor (TL) can be made of a conductive material. For example, the signal conductor (TL) can be made of conductive materials such as titanium (Ti), aluminum (Al), copper (Cu), molybdenum (Mo), nickel (Ni), chromium (Cr), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), etc. Alternatively, the majority of signal conductors (TL) can be formed from a multilayer structure containing conductive materials. For example, the majority of signal conductors (TL) can be formed from a multilayer structure in which titanium (Ti), aluminum (Al), titanium (Ti), and indium tin oxide (ITO) are stacked.

[0083] The majority of communication lines NL can be located in a region between adjacent pixels PX. The communication line NL can be arranged to extend in a line direction within a region between adjacent pixels PX. The communication line NL can be located in a region between adjacent second electrodes CE2, without the adjacent second electrodes CE2 overlapping. For example, the communication line NL can be a line used for short-range communication, such as near-field communication (NFC). The communication line NL can also function as an antenna.

[0084] According to the present disclosure, a Wall BNK can be arranged in each of the plurality of subpixels. The Wall BNK can be a structure in which the plurality of light-emitting devices ED are arranged. The plurality of Walls BNK can direct the positions of the plurality of light-emitting devices ED in a transmission process of the plurality of light-emitting devices ED. The plurality of light-emitting devices ED can be transferred to the plurality of Walls BNK in the transmission process of the plurality of light-emitting devices ED. The entire area of ​​the light-emitting device ED can overlap the Wall BNK. The plurality of Walls BNK can be a wall structure or a construction, but implementations of the present disclosure are not limited to this.

[0085] A wall BNK of the first subpixel SP1, a wall BNK of the second subpixel SP2, and a wall BNK of the third subpixel SP3 can be arranged so that they are spaced apart from each other. Alternatively, the wall BNK of the first subpixel SP1, the wall BNK of the second subpixel SP2, and the wall BNK of the third subpixel SP3 can be configured to be separate. Accordingly, the walls BNK of the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3, onto which different types of light-emitting devices (EDs) are transmitted, can be easily identified.

[0086] The wall BNK of the 1a subpixel SP1a and the wall BNK of the 1b subpixel SP1b can be connected or separated. For example, the wall BNK of the 1a subpixel SP1a and the wall BNK of the 1b subpixel SP1b, in which the same light-emitting device ED is located, can be connected or separate, depending on design requirements such as transmission process needs. Similarly, the wall BNK of the 2a subpixel SP2a and the wall BNK of the 2b subpixel SP2b can be connected or separate. The wall BNK of the 3a subpixel SP3a and the wall BNK of the 3b subpixel SP3b can be connected or separate, depending on design requirements.Accordingly, the Wall BNK of the pair of first subpixels SP1, the Wall BNK of the pair of second subpixels SP2 and the Wall BNK of the pair of third subpixels SP3 can be formed in different ways.

[0087] For example, each of the multiple BNK walls can be formed from an organic insulating material. Each of the multiple BNK walls can be formed from a single layer or a multiple layer of an organic insulating material. For example, each of the multiple BNK walls can be formed from a photoresist, a polyimide (PI), an acrylic-based material, or the like.

[0088] The first electrode CE1 can be located in any of the multiple subpixels. The first electrode CE1 can overlap the wall BNK to be located on the wall BNK. The first electrode CE1 can be electrically connected to any of the multiple signal lines TL.

[0089] At least one section of the first electrode CE1 can extend to an outer surface of the wall BNK to be electrically connected to the signal line TL that is closest to the first electrode CE1. A section of the first electrode CE1 can overlap the wall BNK, with the remainder of the first electrode CE1 not overlapping the wall BNK.

[0090] For example, a section of the first electrode CE1 of the 1a-th subpixel SP1a can extend to a side region of the 1a-th subpixel SP1a to be electrically connected to the first signal line TL1, and a section of the first electrode CE1 of the 1b-th subpixel SP1b can extend to the other side region of the 1b-th subpixel SP1b to be electrically connected to the second signal line TL2. A section of the first electrode CE1 of the 2a-th subpixel SP2a can extend to a side region of the 2a-th subpixel SP2a to be electrically connected to the third signal line TL3, and a section of the first electrode CE1 of the 2b-th subpixel SP2b can extend to the other side region of the 2b-th subpixel SP2b to be electrically connected to the fourth signal line TL4.A section of the first electrode CE1 of the 3a-th subpixel SP3a can extend to a side region of the 3a-th subpixel SP3a to be electrically connected to the fifth signal line TL5, and a section of the first electrode CE1 of the 3b-th subpixel SP3b can extend to the other side region of the 3b-th subpixel SP3b to be electrically connected to the sixth signal line TL6.

[0091] The first electrode CE1 is electrically connected to the anode electrode of the light-emitting device ED. The anode voltage from the pixel driver circuit PD can be transmitted to the light-emitting device ED via the signal line TL and the first electrode CE1. A different voltage can be applied to the first electrode CE1 for each of the multiple subpixels, depending on the image being displayed. For example, a different voltage can be applied to the first electrode CE1 of multiple subpixels. Accordingly, the first electrode CE1 can be referred to as a pixel electrode.

[0092] The first electrode CE1 can be formed from a conductive material. For example, the first electrode CE1 can be integral with the signal line TL. Alternatively, the first electrode CE1 can be formed from the same conductive material as the signal line TL. For example, the first electrode CE1 can be formed from a conductive material such as titanium (Ti), aluminum (Al), copper (Cu), molybdenum (Mo), nickel (Ni), chromium (Cr), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), and the like. In another example, the first electrode CE1 can be formed from a multilayer structure of the conductive material. For example, multiple first electrodes CE1 can be formed from a multilayer structure in which titanium (Ti), aluminum (Al), titanium (Ti), and indium tin oxide (ITO) are stacked.

[0093] The light-emitting device ED can be arranged in any of a plurality of subpixels. The plurality of light-emitting devices ED can consist of any one light-emitting diode (LED) and one micro-light-emitting diode (micro-LED). The plurality of light-emitting devices ED can overlap the wall BNK and the first electrode CE1, or be arranged on the wall BNK and the first electrode CE1. The entire area of ​​the light-emitting device ED can overlap the wall BNK and the first electrode CE1.

[0094] The light emission devices ED can be arranged on the first electrode CE1 and can be electrically connected to the first electrode CE1. Accordingly, the light emission device ED can emit light using the anode voltage (or anode current) from the pixel driver circuit PD through the signal line TL and the first electrode CE1.

[0095] The plurality of light-emitting devices ED can comprise a first light-emitting device 130, a second light-emitting device 140, and a third light-emitting device 150. The first light-emitting device 130 can be located in the first subpixel SP1. The second light-emitting device 140 can be located in the second subpixel SP2. The third light-emitting device 150 can be located in the third subpixel SP3. For example, one of the first light-emitting device 130, the second light-emitting device 140, and the third light-emitting device 150 can be a red light-emitting device, another can be a green light-emitting device, and another can be a blue light-emitting device, but implementations of the present disclosure are not limited thereto.Light of various colors, including white, can be implemented by combining red, green, and blue light emitted by the majority of light-emitting devices ED. The types of light-emitting devices ED are examples, and implementations of the present disclosure are not limited to them.

[0096] The first light-emitting device 130 can comprise a 1a-th light-emitting device 130a located in the 1a-th subpixel SP1a, and a 1b-th light-emitting device 130b located in the 1b-th subpixel SP1b. The second light-emitting device 140 can comprise a 2a-th light-emitting device 140a located in the 2a-th subpixel SP2a, and a 2b-th light-emitting device 140b located in the 2b-th subpixel SP2b. The third light-emitting device 150 can comprise a 3a-th light-emitting device 150a located in the 3a-th subpixel SP3a, and a 3b-th light-emitting device 150b located in the 3b-th subpixel SP3b.

[0097] The second electrode CE2 can be located in any of the plurality of subpixels.

[0098] The second electrode CE2 can be arranged on the light emission device ED. The second electrode CE2 can be electrically connected to the pixel driver circuit PD via contact electrodes CCE.

[0099] For example, the second electrode CE2 can be electrically connected to the cathode electrode of the light emission device ED to transmit the cathode voltage from the pixel driver circuit PD to the light emission device ED. That is, the second electrode CE2 is connected to the cathode electrode. Therefore, in the following description, the second electrode CE2 can refer to a cathode electrode or to a separate electrode connected to the cathode electrode.

[0100] The same cathode voltage can be applied to the second electrodes CE2 of the majority of subpixels. For example, the same voltage can be applied to the second electrodes CE2 provided in the majority of subpixels. Accordingly, the second electrode CE2 can be referred to as a common electrode.

[0101] At least some of the multiple subpixels can share the second electrode CE2. For example, the second electrode CE2 can be provided in at least two subpixels. To provide a further description, the second electrode CE2 can be provided in at least one pixel PX among a multiple of pixels PX arranged in the same row in the horizontal direction (X-axis direction). For example, a second electrode CE2 can be arranged in a multiple of pixels PX. That is, a second electrode CE2 can be arranged in n subpixels (n being a natural number). Fig. 7A and Fig. Figure 7B shows a display device in which a second electrode CE2 is provided in two subpixels arranged in the horizontal direction (X-axis direction).

[0102] In this case, the second electrodes CE2, which are arranged in the plurality of subpixels, can be spaced apart or separated from each other. For example, the second electrode CE2 connected to the pixels PX of an nth row and the second electrode CE2 connected to the pixels PX of an n+1th row can be spaced apart or separated from each other. For example, as in Fig. 7A and Fig. Figure 7B shows that the majority of second electrodes CE2 are spaced apart, with the majority of communication lines NL, extending in a line direction, inserted between them. Accordingly, the number of subpixels can be greater than the number of second electrodes CE2.

[0103] The majority of the second electrodes CE2 can be formed from a transparent conductive material. When the majority of the second electrodes CE2 are formed from the transparent conductive material, light emitted by the light emission device ED is directed onto an upper section of the second electrode CE2. For example, the second electrode CE2 can be formed from a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), or the like.

[0104] A plurality of contact electrodes CCE can be arranged on the substrate 110. For example, the plurality of contact electrodes CCE can be arranged such that they are spaced away from a plurality of walls BNK and a plurality of signal lines TL. Each of the plurality of second electrodes CE2 can overlap at least one contact electrode CCE. For example, a second electrode CE2 can overlap a plurality of contact electrodes CCE.

[0105] For example, the majority of contact electrodes CCE can be electrically connected to the second electrode CE2. The contact electrode CCE can be positioned between the substrate 110 and the second electrode CE2 to transmit the cathode voltage supplied by the pixel driver circuit PD to the second electrode CE2.

[0106] When a micro-LED is used as the light-emitting device (LED), multiple micro-LEDs can be formed on a wafer and transferred to substrate 110 to manufacture the display panel 100. Various defects can occur during the transfer process of these micro-sized LEDs from the wafer to substrate 110. For example, a non-transfer defect, where the LED fails to transfer, can occur in some subpixels, and a defect, where the LED is transferred out of position due to an alignment error, can also occur in some subpixels. Furthermore, even if the transfer process proceeds normally, the transferred LED itself may be defective.Accordingly, multiple identical light-emitting devices (LEDs) can be transferred to a subpixel, taking into account the defect during the transfer process. After the illumination test of the multiple LEDs is performed, only one LED can be used, which is ultimately determined to be normal.

[0107] For example, the 1a-th light emission device 130a and the 1b-th light emission device 130b can be assigned to a pixel PX, and it is possible to check whether there is a defect in the 1a-th light emission device 130a and the 1b-th light emission device 130b. If both the 1a-th light emission device 130a and the 1b-th light emission device 130b are found to be normal, only the 1a-th light emission device 130b can be used, and the 1b-th light emission device 130b cannot be used. As another example, if only the 1b-th light emission device 130b of the 1a-th light emission device 130a and the 1b-th light emission device 130b are determined to be normal, the 1a-th light emission device 130a will not be used and only the 1b-th light emission device 130b can be used.Therefore, even if the majority of identical light emission devices ED are transferred to a pixel PX, only one light emission device ED can ultimately be used.

[0108] In this case, either of the pair of light-emitting devices (LEDs) can be designated as the primary LED, and the other can be designated as the redundant LED. The redundant LED is an additional LED that is deployed to prepare for a failure in the primary LED. If the primary LED fails, the redundant LED can be used instead. The primary LED and the redundant LED are deployed to a single pixel (PX), thus minimizing any degradation in display quality due to failures in either the primary LED or the redundant LED.

[0109] For example, the 1a-th light emission device 130a, the 2a-th light emission device 140a and the 3a-th light emission device 150a, which are transmitted to a pixel PX, can be used as the main light emission device ED, and the 1b-th light emission device 130b, the 2b-th light emission device 140b and the 3b-th light emission device 150b can be used as the redundant light emission device ED.

[0110] Fig. Figure 8 is an exemplary diagram showing a cross-sectional area of ​​a display panel used in a display device according to an implementation of the present disclosure, and Fig. Figure 9 is a cross-sectional view of a light emission device used in a display device according to an implementation of the present disclosure. For example, Fig. 8 a cross-sectional view of the display area AA, the first non-display area NA, the bending area BA and the second non-display area NA2 and is Fig. 9 a cross-sectional view of the light emission device ED in the display area AA.

[0111] Referring to Fig. 8 A first buffer layer 111a and a second buffer layer 111b can be arranged in the remaining area of ​​the substrate 110 with the exception of the bending area BA.

[0112] The first buffer layer 111a and the second buffer layer 111b can be arranged in the display region AA, the first non-display region NA1, and the second non-display region NA2, respectively. The first buffer layer 111a and the second buffer layer 111b can reduce the penetration of moisture or contaminants through the substrate 110. The first buffer layer 111a and the second buffer layer 111b can be formed from an inorganic insulating material. For example, each of the first buffer layer 111a and the second buffer layer 111b can be formed from a single layer made of silicon dioxide (SiOx) or silicon nitride (SiNx), or from a multiple layer comprising at least one of silicon dioxide (SiOx) and silicon nitride (SiNx), but implementations of the present disclosure are not limited thereto.

[0113] For example, sections of the first buffer layer 111a and the second buffer layer 111b can be removed from the bending area BA. An upper surface of the substrate 110 located in the bending area BA cannot be covered by the first buffer layer 111a and the second buffer layer 111b, leaving it exposed. Removing the first buffer layer 111a and the second buffer layer 111b, which are made of the inorganic insulating material, from the bending area BA can reduce or minimize cracks that may occur during bending in the first buffer layer 111a and the second buffer layer 111b.

[0114] A plurality of alignment marks MK can be arranged between the first buffer layer 111a and the second buffer layer 111b. The plurality of alignment marks MK can be formed to identify the position of the pixel driver circuit PD during a manufacturing process of the display panel 100. For example, the plurality of alignment marks MK can align the position of the pixel driver circuit PD as it is transferred to an adhesive layer 112. However, the plurality of alignment marks MK can also be omitted.

[0115] An adhesive layer 112 can be arranged on the second buffer layer 111b. The adhesive layer 112 can be located in the display area AA, the first non-display area NA1, the flex area BA, and the second non-display area NA2. A section of the adhesive layer 112 can be located away from the non-display area NA, which includes the flex area BA. For example, the adhesive layer 112 can be formed from any adhesive polymer, an epoxy resin, a UV-curable resin, a polyimide-based resin, an acrylate-based material, a urethane-based material, or a polydimethylsiloxane (PDMS).

[0116] In the display area AA, the pixel driver circuit PD can be arranged on the adhesive layer 112. The pixel driver circuit PD can be applied to the adhesive layer 112 by a transfer process, but implementations of the present disclosure are not limited to this.

[0117] A first protective layer 113a and a second protective layer 113b can be arranged on the adhesive layer 112 and the pixel driver circuit PD. The first protective layer 113a and the second protective layer 113b can surround a side face of the pixel driver circuit PD. For example, the second protective layer 113b can cover at least a portion of a top face of the pixel driver circuit PD. At least one of the first protective layer 113a and the second protective layer 113b, which are arranged on the bending area BA, can be omitted. For example, the first protective layer 113a can be arranged entirely within the display area AA and the non-display area NA. Similarly, the second protective layer 113b can be arranged partially within the display area AA, the first non-display area NA1, and the second non-display area NA2. Furthermore, in some implementations, the second protective layer 113b is not arranged within the bending area BA.

[0118] The first protective layer 113a and the second protective layer 113b can be formed from an organic insulating material. For example, the first protective layer 113a and the second protective layer 113b can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like. The first protective layer 113a and the second protective layer 113b can be a coating layer or an insulating layer.

[0119] According to the present disclosure, a plurality of first connecting lines 121 can be arranged on the second protective layer 113b in the display area AA. The first connecting line 121 can be a line for electrically connecting the pixel driver circuit PD to other devices. The pixel driver circuit PD can be electrically connected to the signal line TL, the contact electrode CCE, or the like via the first connecting line 121.

[0120] The first connecting line 121 can have a 1a-th connecting line 121a, a 1b-th connecting line 121b, a 1c-th connecting line 121c and a 1d-th connecting line 121d.

[0121] The majority of 1a-th connecting lines 121a can be arranged on the second protective layer 113b. The majority of 1a-th connecting lines 121a can be electrically connected to the pixel driver circuit PD. The 1a-th connecting lines 121a can transmit voltages output by the pixel driver circuit PD to the first electrode CE1 or the second electrode CE2.

[0122] A third protective layer 114 can be arranged on top of the second protective layer 113b. The third protective layer 114 can be arranged over the entire display area AA and the non-display area NA. In the bending area BA, the third protective layer 114 can be arranged on or cover a side surface of the second protective layer 113b and a top surface of the first protective layer 113a. The third protective layer 114 can be formed from an organic insulating material. The third protective layer 114 can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like. For example, the first protective layer 113a, the second protective layer 113b, and the third protective layer 114 can be formed from the same material, but implementations of the present disclosure are not limited to this.

[0123] The majority of the 1b-th interconnects 121b can be arranged on the third protective layer 114. The 1b-th interconnects 121b can be connected to the pixel driver circuit PD via the 1a-th interconnects 121a or can be directly connected to the pixel driver circuit PD. For example, one section of the 1b-th interconnect 121b can be directly connected to the pixel driver circuit PD through a contact hole in the third protective layer 114. The other section of the 1b-th interconnect 121b can be electrically connected to the 1a-th interconnect 121a through a contact hole in the third protective layer 114. However, implementations of the present disclosure are not limited to this.For example, the voltage output by the pixel driver circuit PD can be transmitted to the first electrode CE1 or the second electrode CE2 via a connecting line that is different from the 1b-th connecting lines 121b.

[0124] A first insulating layer 115a can be arranged on the majority of 1b-th connecting lines 121b. The first insulating layer 115a can be arranged in the entire display area AA and the non-display area NA, but implementations of the present disclosure are not limited thereto. The first insulating layer 115a can be formed from an organic insulating material. The first insulating layer 115a can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like.

[0125] The majority of 1c-th connecting lines 121c can be arranged on the first insulating layer 115a. The 1c-th connecting lines 121c can be electrically connected to the 1b-th connecting lines 121b. For example, the 1c-th connecting lines 121c can be electrically connected to the 1b-th connecting lines 121b through a contact hole in the first insulating layer 115a.

[0126] A second insulating layer 115b can be arranged on the majority of 1c connecting leads 121c. The second insulating layer 115b can be arranged in the remaining area, excluding the bending region BA. The second insulating layer 115b can be arranged in the display region AA, the first non-display region NA1, and the second non-display region NA2. For example, at least one section of the second insulating layer 115b located in the bending region BA can be omitted. The second insulating layer 115b can be formed from an organic insulating material, but implementations of the present disclosure are not limited to this. For example, the second insulating layer 115b can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like.

[0127] The majority of the 1d-th connecting lines 121d can be arranged on the second insulating layer 115b. The 1d-th connecting lines 121d can be electrically connected to the 1c-th connecting lines 121c. For example, the 1d-th connecting lines 121d can be electrically connected to the 1c-th connecting lines 121c through a contact hole in the second insulating layer 115b.

[0128] The 1d-th connecting line 121d can be connected to the contact electrode CCE through a contact hole of a third insulating layer 115c, and thus the contact electrode CCE and the pixel driver circuit PD can be electrically connected to the first connecting line 121.

[0129] This means that the contact electrode CCE, which is connected to the second electrode CE2, can be electrically connected to the pixel driver circuit PD through the 1d-th connecting line 121d, the 1c-th connecting line 121c, the 1b-th connecting line 121b and the 1a-th connecting line 121a.

[0130] However, the 1d-th connecting line 121d can be directly connected to the signal line TL through a contact hole located in the third insulation layer 115c, or can be electrically connected to the signal line TL through another additional line or electrode, and thus the signal line TL and the pixel driver circuit PD can be electrically connected to each other through the first connecting line 121.

[0131] The signal line TL can be formed from at least one of the 1a-th to 1d-th connecting lines 121a to 121d or can be connected to the first connecting line 121.

[0132] A plurality of second interconnection lines 122 can be arranged on the second protective layer 113b in the non-display area NA. The second interconnection lines 122 can be a line for transmitting a signal received from the flexible printed circuit board (or flexible film) 170 and a printed circuit board 160 to the pixel driver circuit PD of the display area AA.

[0133] For example, the majority of second connecting lines 122 can be electrically connected to the majority of pad electrodes PE to receive signals from flexible printed circuit boards (or flexible films) 170 and printed circuit boards 160.

[0134] For example, the plurality of second connecting lines 122 can extend from the pad part PAD to the display area AA to transmit signals to the lines of the display area AA. In this case, each of the plurality of second connecting lines 122 can act as connecting lines LL (in Fig. 3 shown). The second connecting line 122 can have a 2a-th connecting line 122a, a 2b-th connecting line 122b, a 2c-th connecting line 122c and a 2d-th connecting line 122d.

[0135] The majority of 2a interconnects 122a can be arranged on the second protective layer 113b. The majority of 2a interconnects 122a can extend from the second non-display area NA2 to the bending area BA and the first non-display area NA1. The majority of 2a interconnects 122a can transmit signals received by the flexible printed circuit board (or flexible film 170) and the printed circuit board 160 to the pixel driver circuit PD of the display area AA. Accordingly, the 2a interconnect can be electrically connected to the pad electrode PE or the pixel driver circuit PD. For example, the 2a interconnect can extend to the display area AA to be directly connected to the pixel driver circuit PD in the display area AA, or it can be electrically connected to the pixel driver circuit PD by other additional leads or electrodes.Furthermore, the 2a-th connection line 122a can be electrically connected to the pad electrode PE in the second non-display area NA2 via the 2b-th connection line 122b, the 2c-th connection line 122c, and the 2d-th connection line 122d. Therefore, the pixel driver circuit PD and the pad electrode PE can be electrically connected via the second connection line 122.

[0136] The majority of the 2b-th interconnects 122b can be arranged on the third protective layer 114. 2b-th interconnects 122b can be arranged in the second non-display area NA2. The 2b-th interconnects 122b can be electrically connected to the 2a-th interconnects 122a through a contact hole in the third protective layer 114. Therefore, signals from the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 to the 2a-th interconnects 122a can be transmitted via the 2b-th interconnects 122b.

[0137] The 2c-th interconnect 122c can be located on the first insulating layer 115a. The 2c-th interconnect 122c can be located in the second non-display area NA2. The 2c-th interconnect 122c can be electrically connected to the 2b-th interconnect 122b through a contact hole in the first insulating layer 115a. Accordingly, signals from the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 can be transmitted to the 2a-th interconnect 122a via the 2c-th interconnect 122c and the 2b-th interconnect 122b.

[0138] The 2d-th connecting line 122d can be arranged on the second insulating layer 115b. The 2d-th connecting line 122d can be arranged in the second non-display area NA2. The 2d-th connecting line 122d can be electrically connected to the 2c-th connecting line 122c through a contact hole in the second insulating layer 115b.

[0139] Accordingly, signals from the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 to the 2a-th connecting line 122a can be transmitted through the 2d-th connecting line 122d, the 2c-th connecting line 122c and the 2b-th connecting line 122b.

[0140] Additionally, the 2a-th connecting line 122a to the display area AA can extend through the bending area BA and can be electrically connected to the pixel driver circuit PD in the display area AA.

[0141] Accordingly, the pad electrode PE, which is provided in the second non-display area NA2, can be electrically connected to the pixel driver circuit PD, which is provided in the display area AA, by the 2d-th connecting line 122d, the 2c-th connecting line 122c, the 2b-th connecting line 122b and the 2a-th connecting line 122a in the bending area BA.

[0142] Each of the first connecting line 121 and the second connecting line 122 can be formed from a conductive material with excellent ductility or from various conductive materials used in the display area AA. For example, the second connecting line 122, which is partially located in the bending area BA, can be formed from a conductive material with excellent ductility, such as gold (Au), silver (Ag), or aluminum (Al). As another example, each of the first connecting lines 121 and the second connecting lines 122 can be formed from molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), an alloy of silver (Ag) and magnesium (Mg), or an alloy thereof, but implementations of the present disclosure are not limited thereto.

[0143] A third insulating layer 115c can be arranged on the majority of first connecting lines 121 and the majority of second connecting lines 122. The third insulating layer 115c can be arranged in the remaining area, excluding the bending region BA. The third insulating layer 115c can be arranged in the display region AA, the first non-display region NA1, and the second non-display region NA2. At least one section of the third insulating layer 115c in the bending region BA can be omitted. The third insulating layer 115c can be formed from an organic insulating material, but implementations of the present disclosure are not limited to this. For example, the third insulating layer 115c can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like.

[0144] A wall BNK can be located on the third insulation layer 115c in the display area AA. The wall BNK can overlap the subpixel. In some implementations, the wall BNK is not located in the first non-display area NA1, the second non-display area NA2, or the bending area BA. One or more light-emitting devices ED of the same type can be located on an upper section of the wall BNK.

[0145] In the display area AA, a plurality of signal lines TL can be arranged on the third insulation layer 115c. The signal line TL can be arranged between the plurality of walls BNK. For example, the signal line TL can be arranged adjacent to any of the plurality of walls BNK. The signal line TL can be electrically connected to the first connecting line 121, for example, the 1d-th connecting line 121d.

[0146] A plurality of contact electrodes CCE can be arranged on the third insulation layer 115c in the display area AA. The contact electrode CCE can provide the cathode voltage of the second electrode CE2, transmitted by the pixel driver circuit PD. The contact electrode CCE can be electrically connected to the first connecting line 121, for example, the 1d-th connecting line 121d.

[0147] A first electrode CE1 can be arranged on the wall BNK. For example, the first electrode CE1 can extend from the adjacent signal line TL to an upper section of the wall BNK. The first electrode CE1 can be arranged on an upper surface of the wall BNK and a side surface of the wall BNK. For example, the first electrode CE1 can extend from the signal line TL on an upper surface of the third insulation layer 115c to the side surface of the wall BNK and the upper surface of the wall BNK. The first electrode CE1 can be formed integrally with the signal line TL.

[0148] With reference to Fig. 9. The first electrode CE1 can have a plurality of conductive layers. For example, the first electrode CE1 can have a first conductive layer CE1a, a second conductive layer CE1b, a third conductive layer CE1c, and a fourth conductive layer CE1d.

[0149] The first conductive layer CE1a can be arranged on the wall BNK. The second conductive layer CE1b can be arranged on the first conductive layer CE1a. The third conductive layer CE1c can be arranged on the second conductive layer CE1b, and the fourth conductive layer CE1d can be arranged on the third conductive layer CE1c. For example, the first conductive layer CE1a, the second conductive layer CE1b, the third conductive layer CE1c, and the fourth conductive layer CE1d can be formed from titanium (Ti), molybdenum (Mo), aluminum (Al), or titanium (Ti) and indium tin oxide (ITO), but implementations of the present disclosure are not limited thereto.

[0150] Some of the conductive layers in the first electrode CE1, which have a high reflection efficiency, can be used as an alignment marker and / or reflector to align the light-emitting device ED. For example, the second conductive layer CE1b, located beneath the conductive layers of the first electrode CE1, can be made of a reflective material. For instance, the second conductive layer CE1b can be made of aluminum (Al). In this case, the second conductive layer CE1b can be used as a reflective plate. Furthermore, due to the high reflection efficiency of the second conductive layer CE1b, identification can be easily achieved during the manufacturing process, and thus the positioning or transmission position of the light-emitting device ED relative to the second conductive layer CE1b can be determined.

[0151] For example, to use the second conductive layer CE1b as the reflective plate, the third conductive layer CE1c and the fourth conductive layer CE1d, which cover the second conductive layer CE1b, can be partially removed or etched. Sections of the third and fourth conductive layers CE1c and CE1d, which are located on the wall BNK, can be removed or etched to expose a top surface of the second conductive layer CE1b. A central section and an edge section of the third and fourth conductive layers CE1c and CE1d, on which a solder structure SDP is located, can remain, and any remaining sections, except for the central section and the edge section of the third and fourth conductive layers CE1c and CE1d, can be removed.In some implementations, the middle and edge sections of each of the third conductive layer CE1c, which is made of titanium (Ti), and the fourth conductive layer CE1d, which is made of indium tin oxide (ITO), are not etched. This prevents corrosion of another conductive layer of the first electrode CE1 by a TMAH (tetramethylammonium hydroxide) solution used in a masking process of the first electrode CE1.

[0152] The first conductive layer CE1a and the third conductive layer CE1c can consist of titanium (Ti) or molybdenum (Mo). The second conductive layer CE1b can consist of aluminum (Al). The fourth conductive layer CE1d can consist of a transparent conductive oxide layer such as indium tin oxide (ITO) or indium zinc oxide (IZO), which exhibits high adhesion to the solder structure SDP and provides corrosion and acid resistance.

[0153] The first conductive layer CE1a, the second conductive layer CE1b, the third conductive layer CE1c and the fourth conductive layer CE1d can be deposited sequentially and then structured by a photolithography process and an etching process.

[0154] Each of the signal line TL, contact electrode CCE, and pad electrode PE, arranged on the same layer as the first electrode CE1, can be formed from multiple layers of conductive materials, but implementations of the present disclosure are not limited thereto. For example, each of the signal line TL, contact electrode CCE, and pad electrode PE can be formed from multiple layers in which indium tin oxide (ITO), titanium (Ti), aluminum (Al), and titanium (Ti) are stacked.

[0155] A solder structure SDP can be arranged on the first electrode CE1 in each of the plurality of subpixels. The solder structure SDP can connect the light emission device ED to the first electrode CE1. The first electrode CE1 and the light emission device ED can be electrically connected by eutectic bonding using the solder structure SDP, but implementations of the present disclosure are not limited to this. For example, if the solder structure SDP is made of indium (In) and the anode electrode 134 of the light emission device ED is made of gold (Au), the solder structure SDP and the anode electrode 134 can be bonded together by applying heat and pressure in the transfer process of the light emission device ED. The light emission device ED can be connected to the solder structure SDP and the first electrode CE1 by eutectic bonding without a separate adhesive element.The SDP solder structure can be made of indium (In), tin (Sn), or alloys thereof. For example, the SDP solder structure can be a bonding pad or the like.

[0156] A passivation layer 116 can be arranged on the majority of signal lines TL, the majority of first electrodes CE1, the majority of contact electrodes CCE, and the third insulating layer 115c. For example, the passivation layer 116 can be arranged in the display area AA, the first non-display area NA1, and the second non-display area NA2. A section of the passivation layer 116 located in the bending area BA can be omitted. A section of the passivation layer 116 covering the majority of pad electrodes PE can be omitted in the second non-display area NA2. A section of the passivation layer 116 covering the majority of contact electrodes CCE can be omitted in the display area AA. The passivation layer 116 covering the solder structure SDP can be omitted in the display area AA. The passivation layer 116 can cover the first electrode CE1.The passivation layer 116 can cover a section of the exposed upper surface of a second conductive layer CE1b.

[0157] Since the passivation layer 116 covers the remaining areas while exposing a section of the majority of pad electrodes (PE), a section of the majority of contact electrodes (CCE), and a section of the solder structure (SDP), the ingress of moisture or contaminants flowing into the light-emitting device (ED) can be reduced. The passivation layer 116 can be formed from a single layer or multiple layers containing silicon oxide (SiOx) or silicon nitride (SiNx). For example, the passivation layer 116 can be a protective layer or an insulating layer. The passivation layer 116 can have a hole that exposes the solder structure (SDP) and holes that expose the contact electrode (CCE).

[0158] In each of the multiple subpixels, the light emission device ED can be arranged on the solder structure SDP. The first light emission device 130 can be arranged in the first subpixel SP1. The second light emission device 140 can be arranged in the second subpixel SP2. The third light emission device 150 can be arranged in the third subpixel SP3.

[0159] The light emission device ED can be formed on silicon wafers by metal-organic vapor deposition (MOCVD), chemical vapor deposition (CVD), plasma-enhanced chemical vapor deposition (PECVD), molecular beam growth (MBE), hydride gas phase deposition (HVPE) or sputtering, but implementations of the present disclosure are not limited to these.

[0160] The first light emission device 130 can comprise an anode electrode 134, a first semiconductor layer 131, an active layer 132, a second semiconductor layer 133, a cathode electrode 135, and an encapsulation layer 136. For example, the encapsulation layer 136 can be omitted from the first light emission device 130.

[0161] The first semiconductor layer 131 can be arranged on the solder structure SDP. The second semiconductor layer 133 can be arranged on the first semiconductor layer 131.

[0162] For example, each of the first semiconductor layer 131 and the second semiconductor layer 133 can be formed from a composite semiconductor such as a group III-V or a group II-VI and can be doped with impurities (or dopants). For example, one of the first semiconductor layer 131 and the second semiconductor layer 133 can be a semiconductor layer doped with n-type impurities, and the other can be a semiconductor layer doped with p-type impurities.For example, each of the first semiconductor layer 131 and the second semiconductor layer 133 can be a layer in which an n-type or p-type impurity is doped into a material such as gallium nitride (GaN), gallium phosphide (GaP), gallium arsenic phosphide (GaAsP), aluminum gallium indium phosphide (AlGalnP), indium aluminum phosphide (InAlP), aluminum gallium nitride (AlGaN), aluminum indium nitride (AlInN), aluminum gallium nitride (AlInGaN), aluminum gallium arsenic (AlGaAs), gallium arsenic (AlGaAs), or a material such as gallium arsenic (GaAs). The n-type impurity can be silicon (Si), germanium (Ge), selenium (Se), carbon (C), tellurium (Te), tin (Sn), or the like. The p-type impurity may be magnesium (Mg), zinc (Zn), calcium (Ca), strontium (Sr), barium (Ba), beryllium (Be), or the like.

[0163] Each of the first semiconductor layer 131 and the second semiconductor layer 133 can be a nitride semiconductor containing n-type impurities or a nitride semiconductor containing p-type impurities. For example, the first semiconductor layer 131 can be a nitride semiconductor containing p-type impurities, and the second semiconductor layer 133 can be a nitride semiconductor containing n-type impurities.

[0164] The active layer 132 can be located between the first semiconductor layer 131 and the second semiconductor layer 133. The active layer 132 can emit light by receiving holes and electrons from the first semiconductor layer 131 and the second semiconductor layer 133. For example, the active layer 132 can be formed from a single-well structure, a multiple-well structure, a single-quantum well structure, a multiple-quantum well (MQW) structure, a quantum dot structure, or a quantum line structure. The active layer 132 can be made of indium gallium nitride (InGaN), gallium nitride (GaN), or the like.

[0165] For another example, the active layer 132 can have a multiple quantum pot (MQW) structure, which includes a pot layer and a barrier layer with a band gap higher than that of the pot layer. For example, the active layer 132 can have InGaN as the pot layer and an AlGaN layer as the barrier layer.

[0166] The anode electrode 134 can be positioned between the first semiconductor layer 131 and the solder structure SDP. The anode electrode 134 can electrically connect the first semiconductor layer 131 to the first electrode CE1. The anode voltage output by the pixel driver circuit PD can be applied to the first semiconductor layer 131 via the signal line TL, the first electrode CE1, and the anode electrode 134. The anode electrode 134 can be made of a conductive material capable of eutectic bonding with the solder structure SDP. For example, the anode electrode 134 can be made of gold (Au), tin (Sn), tungsten (W), silicon (Si), silver (Ag), titanium (Ti), iridium (Ir), chromium (Cr), indium (In), zinc (Zn), lead (Pb), platinum (Pt), copper (Cu), or alloys thereof.

[0167] The cathode electrode 135 can be arranged on the second semiconductor layer 133. For example, the cathode electrode 135 can electrically connect the second semiconductor layer 133 to the second electrode CE2. The cathode voltage output by the pixel driver circuit PD can be applied to the second semiconductor layer 133 through the contact electrode CCE, the second electrode CE2, and the cathode electrode 135. The cathode electrode 135 can be formed from a transparent conductive material to allow light emitted by the light emission device ED to be directed onto an upper section of the light emission device ED. For example, the cathode electrode 135 can be formed from a material such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), or the like.

[0168] The encapsulation layer 136 can be arranged on at least one section of each of the first semiconductor layer 131, the active layer 132, the second semiconductor layer 133, the anode electrode 134, and the cathode electrode 135. For example, the encapsulation layer 136 can surround at least one section of each of the first semiconductor layer 131, the active layer 132, the second semiconductor layer 133, the anode electrode 134, and the cathode electrode 135.

[0169] The encapsulation layer 136 can protect the first semiconductor layer 131, the active layer 132, and the second semiconductor layer 133. The encapsulation layer 136 can be arranged on a side face of the first semiconductor layer 131, a side face of the active layer 132, and a side face of the second semiconductor layer 133.

[0170] The encapsulation layer 136 can be arranged on at least one section of the anode electrode 134 and the cathode electrode 135. For example, the encapsulation layer 136 can be arranged on the edge section (or one side) of the anode electrode 134 and the edge section (or one side) of the cathode electrode 135. At least one section of the anode electrode 134 can be exposed through the encapsulation layer 136, and thus the anode electrode 134 can be connected to the solder structure SDP. For example, at least one section of the cathode electrode 135 can be exposed through the encapsulation layer 136, and thus the cathode electrode 135 can be connected to the second electrode CE2. The encapsulation layer 136 can be formed from an insulating material such as silicon nitride (SiNx) or silicon oxide (SiOx).

[0171] As another example, the encapsulation layer 136 can be a layer in which a reflective material is dispersed within a resin layer. The encapsulation layer 136 can be manufactured as a reflector with various structures. Light emitted by the active layer 132 can be reflected upwards by the encapsulation layer 136, thus improving the light extraction efficiency. In this case, the encapsulation layer 136 can be a reflective layer.

[0172] The light emission device ED has been described as a vertical structure, but implementations of the present disclosure are not limited to this. For example, the light emission device ED can have a lateral structure or a flip-chip structure.

[0173] Although the first light-emitting device 130 above with reference to Fig. As described in Figure 9, the second light-emitting device 140 and the third light-emitting device 150 can have essentially the same structure as the first light-emitting device 130. For example, each of the second light-emitting device 140 and the third light-emitting device 150 can have essentially the same configuration as the first semiconductor layer 131, the active layer 132, the second semiconductor layer 133, the anode electrode 134, the cathode electrode 135, and the encapsulation layer 136.

[0174] According to the present revelation, as in Fig. 8 and Fig. As shown in Figure 9, a first optical layer 117a, surrounding the plurality of light-emitting devices ED, can be arranged in the display area AA. For example, the first optical layer 117a can cover the side faces of the light-emitting devices ED and the side faces of the plurality of walls BNK. The first optical layer 117a can cover a section of the passivation layer 116. The first optical layer 117a can be arranged between the second electrode CE2, the passivation layer 116, and the plurality of light-emitting devices.

[0175] The first optical layer 117a can be arranged between and cover the plurality of light-emitting devices ED contained in a pixel PX. The first optical layer 117a can also be arranged between and cover the plurality of light-emitting devices ED contained in a pixel PX. For example, the first optical layer 117a can extend in the first direction and the plurality of first optical layers 117a can be spaced apart from each other in a top view. For example, the first optical layer 117a can be arranged between the passivation layer 116 and the second electrode CE2 to surround the side face of the light-emitting device ED and the side face of the wall BNK.The first optical layer 117a can be described as a diffusion layer, a sidewall diffusion layer, or the like. In the following description, the first direction can be the X-axis direction, which is shown in . Fig. 5 is shown, and the second direction can be the Y-axis direction, which is shown in Fig. Figure 5 illustrates this. For example, the first direction and the second direction are different directions. Accordingly, in the following description, the reference symbol X can be assigned to the first direction and the reference symbol Y can be assigned to the second direction.

[0176] The first optical layer 117a can comprise an organic insulating material in which fine particles are dispersed. For example, the first optical layer 117a can be formed from siloxane in which fine metal particles, such as titanium dioxide (TiO2) particles, are dispersed. Light from the majority of light-emitting devices ED can be scattered by fine particles dispersed in the first optical layer 117a and emitted to an outer surface of the display panel 100. Accordingly, the first optical layer 117a can improve the extraction efficiency of light emitted by the majority of light-emitting devices ED.

[0177] The first optical layer 117a can be located in each of the plurality of pixels PX, or it can be located in some pixels PX that are arranged in the same row. For example, the first optical layer 117a can be located in each of the plurality of pixels PX. Furthermore, the plurality of pixels PX can share a first optical layer 117a. As another example, each of the plurality of subpixels can separately have a first optical layer 117a.

[0178] The second optical layer 117b can be arranged on the passivation layer 116 in the display area AA. For example, the second optical layer 117b can surround the first optical layer 117a. For example, the second optical layer 117b can be in contact with a side face of the first optical layer 117a. For example, the second optical layer 117b can be arranged in a region between the plurality of pixels PX. However, implementations of the present disclosure are not limited to these. The second optical layer 117b can be referred to as a diffusion layer, a window diffusion layer, or the like.

[0179] The second optical layer 117b can be formed from an organic insulating material, but implementations of the present disclosure are not limited to this. The second optical layer 117b can be formed from the same material as the first optical layer 117a, but implementations of the present disclosure are not limited to this. For example, the first optical layer 117a can contain fine particles, and the second optical layer 117b can exclude fine particles. For example, the second optical layer 117b can be formed from siloxane.

[0180] The thickness of the first optical layer 117a can be less than the thickness of the second optical layer 117b. Accordingly, in a top view, an area where the first optical layer 117a is located can have a concave section that is recessed by an upper surface of the second optical layer 117b.

[0181] The second electrode CE2 can be arranged on the first optical layer 117a and the second optical layer 117b. The second electrode CE2 can be electrically connected to the plurality of contact electrodes CCE through a contact hole in the second optical layer 117b. The second electrode CE2 can be arranged on a plurality of light-emitting devices ED. The second electrode CE2 can have a transparent conductive oxide such as indium tin oxide (ITO) or indium zinc oxide (IZO). The second electrode CE2 can be arranged to be in contact with the cathode electrode 135. The second electrode CE2 can overlap the entire first optical layer 117a and can overlap a section of the second optical layer 117b.

[0182] The second electrode CE2 can extend continuously in the first direction X of the substrate 110. Accordingly, the second electrode CE2 can be connected to at least two pixels PX that are arranged in the first direction X of the substrate 110. For example, the second electrode CE2 can be connected to at least two pixels PX.

[0183] The second electrode CE2 can be provided at the upper ends of the first optical layer 117a, the second optical layer 117b, and the light emission device ED. The area where the first optical layer 117a is located can have a concave section recessed inwards from the upper surface of the second optical layer 117b. Since a first section of the second electrode CE2, located on the first optical layer 117a, is positioned along the concave section, it can accordingly be located at a lower position than a second section of the second electrode CE2, located on the second optical layer 117b.

[0184] A third optical layer 117c can be arranged on the second electrode CE2. The third optical layer 117c can be arranged to overlap a plurality of light-emitting devices ED and the first optical layer 117a. In this case, the third optical layer 117c does not overlap the second optical layer 117b. Because the third optical layer 117c is arranged on the second electrode CE2 and a plurality of light-emitting devices ED, the third optical layer 117c can improve spot mura that may occur in some of the plurality of light-emitting devices ED. For example, when the plurality of light-emitting devices ED are transferred to the substrate 110 of the display panel 100, an area may occur where the gap between the plurality of light-emitting devices ED is not uniform due to a process variation or the like.If the gap between the plurality of light-emitting devices ED is not uniform, the light emission area of ​​each of the plurality of light-emitting devices ED may be non-uniformly arranged, and thus a spot (or mura) may be perceived by a user. Since the third optical layer 117c is formed to uniformly scatter light on an upper section of the plurality of light-emitting devices ED, it is possible to reduce the visibility of light emitted by some light-emitting devices ED as spots (or mura). Therefore, since the light emitted by the plurality of light-emitting devices ED is uniformly scattered by the third optical layer 117c and extracted to the outside of the display panel 100, the luminance uniformity of the display device can be improved.

[0185] The third optical layer 117c can be formed from an organic insulating material in which fine particles are dispersed, but implementations of the present disclosure are not limited thereto. For example, the third optical layer 117c can be formed from siloxane in which fine metal particles, such as titanium dioxide (TiO2) particles, are dispersed. However, the third optical layer 117c can also be formed from the same material as the first optical layer 117a. The third optical layer 117c can be referred to as a diffusion layer, an upper diffusion layer, or the like.

[0186] Light from the multiple light-emitting devices ED can be scattered by fine particles distributed in the third optical layer 117c and emitted to the outside of the display panel 100. The third optical layer 117c can uniformly mix the light emitted by the multiple light-emitting devices ED to further improve the luminance uniformity of the display. Furthermore, the light extraction efficiency of the display can be improved by the light scattered by the multiple fine particles, thus enabling the display to be driven with low power.

[0187] In the display area AA, a black matrix BM can be arranged on the second electrode CE2, the first optical layer 117a, the second optical layer 117b, and the third optical layer 117c. For example, the black matrix BM can fill a contact hole in the second optical layer 117b. Because the black matrix BM can cover the display area AA, color mixing of light from the majority of subpixels and reflection of external light can be reduced. For example, because the black matrix BM is also arranged within a contact hole where the second electrode CE2 and the contact electrode CCE are connected, light leakage between the majority of adjacent subpixels can be reduced or prevented.

[0188] The black matrix BM is not provided at the top of the light emission device ED. Therefore, light generated by the light emission device ED can be emitted externally.

[0189] The black matrix BM can be formed from an opaque material, but implementations of the present disclosure are not limited to this. For example, the black matrix BM can be an organic insulating material to which a black pigment or a black dye has been added.

[0190] As in Fig. As shown in Figure 8, a cover layer 118 can be arranged on the black matrix BM in the display area AA. The cover layer 118 can protect a device beneath it. For example, the cover layer 118 can be formed from an organic insulating material, but implementations of the present disclosure are not limited to this. For example, the cover layer 118 can be formed from a photoresist, polyimide (PI), a photoacrylic-based material, or the like. The cover layer 118 can be referred to as a coating layer, an insulating layer, or the like.

[0191] A polarizing layer 280 can be arranged on the cover layer 118 over a first adhesive layer 291. A cover element 120 can be arranged on the polarizing layer 280 over a second adhesive layer 295. For example, the first adhesive layer 291 and the second adhesive layer 295 can comprise an optically clear adhesive (OCA), an optically clear resin (OCR), a pressure-sensitive adhesive (PSA), or the like, but implementations of the present disclosure are not limited thereto.

[0192] According to the present disclosure, the plurality of pad electrodes PE can be arranged on the third insulation layer 115c in the second non-indication area NA2. For example, a section of the plurality of pad electrodes PE can be exposed through the passivation layer 116. For example, the pad electrode PE can be electrically connected to the 2-4th connecting line 122d through a contact hole in the third insulation layer 115c.

[0193] An adhesive film ACF can be arranged on the plurality of pad electrodes PE. The adhesive film ACF can be an adhesive layer in which conductive spheres are distributed within an insulating material. When heat or pressure is applied to the adhesive film ACF, the conductive sphere can be electrically connected to the pad electrode in the area where heat or pressure is applied, and thus the conductive sphere can exhibit conductive properties. An adhesive film ACF can be arranged between the plurality of pad electrodes PE and the flexible printed circuit board (or flexible film) 170, so that a flexible printed circuit board (or flexible film) 170 can be attached to or connected to the plurality of pad electrodes PE. For example, the adhesive film ACF can be an anisotropic conductive film (ACF).

[0194] The flexible printed circuit board (or flexible film) 170 can be arranged on the adhesive film ACF. The flexible printed circuit board (or flexible film) 170 can be electrically connected to the majority of pad electrodes PE via the adhesive film ACF. Therefore, signals output by the flexible printed circuit board (or flexible film) 170 and the printed circuit board 160 can be transmitted to the pixel driver circuit PD of the display area AA via pad electrode PE, the 2d-th connection line 122d, the 2c-th connection line 122c, the 2b-th connection line 122b, and the 2a-th connection line 122a.

[0195] Fig. Figure 10 is an exemplary diagram showing the structure of a touch electrode part and a display driver used in a display device according to an implementation of the present disclosure. Details relating to the following descriptions are given. Fig. 1 to Fig. Details described in section 9 are the same or similar, have been omitted, or are briefly described.

[0196] The display device according to an implementation of the present disclosure can, as in Fig. Figure 10 shows a display panel 100 on which an image is displayed, and a display driver 200 for providing image signals and control signals for the pixel driver circuit PD in the display panel 100 during a display period and for detecting a touch on the display panel 100 using touch detection signals transmitted by pixel driver circuits PD provided in the display panel 100 during a touch detection period.

[0197] Furthermore, according to one implementation of the present disclosure, the display device can also include a time control device 300, a power circuit, such as a power part 500, a memory, etc., as described with reference to Fig. 1 and Fig. 2 described, in addition to the display panel 100 and the display driver 200. In this case, the display driver 200 can be contained in the timing control device 300.

[0198] The display driver 200 and the timing control device 300 can be provided on the circuit board 160.

[0199] The power supply unit 500 can supply the display panel 100, the pixel driver circuit PD, the display driver 200, and the timing control device 300 with power at various levels. In particular, the power supply unit 500 can perform the function of providing a cathode voltage to the second electrode CE2. For this purpose, the power supply unit 500 can include a cathode voltage supply unit 510. However, the cathode voltage supply unit 510 can be provided independently of the power supply unit 500.

[0200] The power section 500 can generate the energy required to drive the pixel driver circuit PD and can transfer the energy to the pixel driver circuit PD. For this purpose, the power section 500 can include a power section 520.

[0201] As described above, the display panel 100 can include the substrate 110, which has the display area AA and the non-display area NDA, the pixel driver circuits PD provided in the display area on the substrate 110, the insulating layer on the pixel driver circuits PD, the walls BNK on the insulating layer, the first electrodes CE1 connected to the pixel driver circuits PD, the light emission devices ED provided on the first electrodes, and the second electrodes CE2 provided on the light emission devices ED.

[0202] Here, the insulating layer can be formed as a single layer, but it can also have multiple layers. For example, the insulating layer can have the first insulating layer 115a, the second insulating layer 115b, and the third insulating layer 115c.

[0203] The first electrode CE1 can be provided in any of the walls BNK.

[0204] The light emission device ED can be provided on the first electrode CE1.

[0205] The second electrode CE2 can be arranged on the light emission device ED.

[0206] Each of the light emission devices ED can be controlled by any of the pixel driver circuits PD.

[0207] Each of the pixel driver circuits PD can be connected to at least two light emission devices ED in order to drive at least two light emission devices ED.

[0208] Each of the second electrodes CE2 can be connected to at least two light emission devices ED.

[0209] Some of the subpixels can be covered by the second electrode CE2. For example, the first light-emitting device 130, the second light-emitting device 140, and the third light-emitting device 150, provided in the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3, can be covered by a second electrode CE2.

[0210] However, as in Fig. 7A and Fig. 7B shows that subpixels SP, which are contained in two or more pixels PX, are covered by a second electrode CE2.

[0211] At least two second electrodes CE2 can be connected to each of the pixel driver circuits PD. For example, if the first light-emitting device 130, the second light-emitting device 140, and the third light-emitting device 150, which are provided in a pixel PX, can each be connected to a second electrode CE2. Furthermore, if the pixel driver circuit PD drives at least two pixels PX, at least two second electrodes CE2 can be connected to the pixel driver circuit PD. For example, if the pixels PX, which are arranged in a 16x16 shape, are connected to the pixel driver circuit PD, then 16 second electrodes CE2 can be connected to the pixel driver circuit PD.

[0212] In this case, the display panel 100 can have a light emission device part EDU comprising pixel driver circuits PD and light emission devices ED, and a touch electrode part TEU comprising at least two second electrodes CE2.

[0213] For example, the display panel can show 100, which is in Fig. Figure 8 shows the substrate 110, the buffer layers 111a and 111b, the adhesive layer 112, the pixel driver circuit PD, the protective layers 113a, 113b and 114, the insulating layers 115a, 115b and 115c, the first connecting line 121, the wall BNK, the first electrodes CE1, the light emission devices ED and the optical layers 117a and 117b contained in the light emission device part EDU.

[0214] Additionally, the display panel can accommodate 100 [units / displays], which is located in Fig. As shown in Figure 8, the second electrodes CE2 are contained in the contact electrode part TEU.

[0215] Furthermore, the display panel can show 100 images, which is located in Fig. As shown in Figure 8, the black matrix BM, the third optical layer 117c, and the cover layer 118 are other components contained in the display panel 100. However, for the sake of simplicity, the black matrix BM, the third optical layer 117c, and the cover layer 118 may be included in the light emission device part EDU in the following description.

[0216] To provide an additional description of how the reference to Fig. As described in Figure 1, the display device 1000 according to one implementation of the present disclosure can comprise a display panel 100, a polarization layer 280, an adhesive layer 290, a cover element 120, a support substrate 190, a flexible printed circuit board 170 and a printed circuit board 160, and the display panel 100 can have various layers as described in Figure 1. Fig. 8 are shown.

[0217] In this case, the various layers contained in the display panel 100 can be divided into the light emission device part EDU and the touch electrode part TEU.

[0218] The light emission device part EDU can have various layers, as described above, and can in particular have light emission devices ED.

[0219] The contact electrode part TEU can have at least two second electrodes CE2.

[0220] In this case, the pixel driver circuits PD can essentially be contained within the light emission device part EDU and can drive the first electrodes CE1 and the second electrodes CE2. However, for the sake of simplicity of description, in Fig. 10 the pixel driver circuits PD are included in the touch electrode part TEU.

[0221] In the following description, the second electrodes CE2, which are controlled by a pixel driver circuit PD, are referred to as a sub-touch electrode STE.

[0222] Additionally, in the following description, a configuration that has at least one sub-contact electrode STE and corresponds to one contact coordinate is referred to as a contact electrode TE.

[0223] For example, the sub-touch electrode STE can be connected to the pixel driver circuit PD, and the sub-touch electrode STE can have at least two second electrodes CE2. As described above, if the pixels PX, arranged in a 16x16 configuration, are connected to the pixel driver circuit PD, the sub-touch electrode STE can have 16 second electrodes CE2.

[0224] A pixel driver circuit PD, which controls a sub-touch electrode STE, can be connected to the display driver 200, as shown in Fig. 10 is shown.

[0225] For example, the pixel driver circuit PD can be connected to the display driver 200 via the image signal line IL. Image signals corresponding to the light emission signals EM, which are to be supplied to the gate of the light emission transistors TEM provided in the pixel driver circuit PD, can be supplied by the display driver 200 to the pixel driver circuit PD via an image signal line. Furthermore, a touch detection signal line, through which a touch detection signal is transmitted, can also be provided between the pixel driver circuit PD and the display driver 200.

[0226] For the sake of simplicity, a display device according to the present disclosure is described below by taking as an example a touch electrode TE having four sub-touch electrodes STE provided along the first direction X and four sub-touch electrodes STE provided along the second direction Y, as shown in Fig. Figure 10 shows that, depending on the structure or resolution of the display panel 100, either the touch electrode TE provided on the left side of the display panel 100 or the touch electrode TE provided on the right side may have three sub-touch electrodes STE provided along the first direction X and four sub-touch electrodes STE provided along the second direction Y. For example, in the display panel 100, each of the touch electrodes TE provided on the right side or the left side of the display panel 100 may have three sub-touch electrodes STE provided along the first direction X and four sub-touch electrodes STE provided along the second direction Y.

[0227] To provide an additional description, the following description may refer to the contact electrode TE, as described in Fig. Figure 10 shows 16 sub-contact electrodes (STE). However, the number of sub-contact electrodes (STE) contained within the contact electrode (TE) can be varied.

[0228] In this case, the display driver 200 can include a data driver that generates image signals to be provided to the pixel driver circuit PD, and a touch driver to detect a touch.

[0229] For example, the display driver can generate 200 image signals to be provided to the pixel driver circuit PD, and can provide the image signals to the pixel driver circuit PD.

[0230] For this purpose, each of the pixel driver circuits PD corresponding to all sub-touch electrodes STE contained in the touch electrode part TEU can be connected to the display driver 200 via the image signal line.

[0231] In this case, the energy required for the pixel driver circuit PD can be transferred from the power supply 500 to the pixel driver circuit PD via the display driver 200, or it can be transferred directly from the power supply 500 to the pixel driver circuit PD. The following describes how this is done. Fig. Figure 10 shows a display device according to the present disclosure described by taking as an example a display device in which the energy part 500 of the pixel driver circuit PD provides energy.

[0232] Furthermore, the cathode voltage required to drive the light emission device ED can be transmitted from the cathode voltage supply section 510 to the pixel driver circuit PD via the display driver 200, or it can be transmitted directly from the cathode voltage supply section 510 to the pixel driver circuit PD. For the sake of simplicity, a display device in which the cathode voltage is transmitted directly from the cathode voltage supply section 510, which is contained in the power section 500, to the pixel driver circuit PD, and power is transmitted directly from the power supply section 520, which is contained in the power section 500, to a detection circuit, such as a detection section 440, is described below as an example of the display device according to the present disclosure.

[0233] Furthermore, the display driver 200 can detect a touch on the display panel 100 using a touch detection signal received by the pixel driver circuit PD.

[0234] In this case, the touch coordinates can be determined by the display driver 200 or can be determined by the time control device 300 or the external system 900.

[0235] First, the structure and function of display panel 100 are described as follows. Details relating to... Fig. 1 to Fig. Details described in section 9 are the same or similar, have been omitted, or are briefly described.

[0236] The display panel 100 can have a light emission device part EDU comprising pixel driver circuits PD and light emission devices ED, and a touch electrode part TEU comprising at least two second electrodes CE2.

[0237] Light can be emitted from the light emission device part EDU, and accordingly an image can be displayed.

[0238] The contact electrode component TEU has at least two contact electrodes TE. The contact electrode TE can have at least one sub-contact electrode STE and can correspond to a contact coordinate.

[0239] The touch electrode TE can have at least two secondary electrodes CE2 connected to the pixel driver circuit PD. These secondary electrodes CE2, controlled by a pixel driver circuit PD, are referred to as sub-touch electrodes STE.

[0240] Each of the at least two second electrodes CE2 can extend along a first direction X of the substrate 110, and at least two second electrodes CE2 can be provided along a second direction Y that differs from the first direction X.

[0241] When a cathode voltage is applied to any of the at least two second electrodes CE2, light can be emitted from light emission devices ED connected to the second electrode CE2 to which the cathode voltage is applied.

[0242] For example, a period during which an image is displayed on the display panel 100 is called a display period, and during the display period a cathode voltage can be supplied to the cathode electrode 135 via the second electrode CE2. The light emission device ED can emit light using a cathode voltage supplied through the cathode electrode 135 and an anode voltage supplied to the anode electrode 134.

[0243] If at least two second electrodes CE2 are used as one touch electrode TE, a touch driver signal can be supplied to the at least two second electrodes CE2 simultaneously.

[0244] For example, a period during which a touch is detected on the display panel 100 is referred to as the touch detection period, and during the touch detection period, each of the pixel driver circuits PD can simultaneously supply a touch driver signal to the second electrodes CE2. In this case, the display driver 200 can detect a touch on the display panel 100 using touch detection signals received by the pixel driver circuit PD from the second electrodes CE2.

[0245] Secondly, the structure and function of the pixel driver circuit PD are described below. Details relating to this are provided below. Fig. 1 to Fig. Details described in section 9 are the same or similar, have been omitted, or are briefly described.

[0246] During the display period, when an image is shown, image signals corresponding to light emission signals EM, which are to be provided to a gate of light emission transistors TEM provided in the pixel driver circuit PD, can be supplied to the pixel driver circuit PD via the image signal line.

[0247] Image signals generated by the display driver 200 are transmitted to the pixel driver circuit PD via the image signal line, and the pixel driver circuit PD can generate light emission signals EM using the image signals. Accordingly, light can be emitted by the light emission devices ED.

[0248] Additionally, the display driver can transmit 200 image signals to each of the image signal lines during the display period. During the touch detection period, when a touch is detected, touch detection signals transmitted by the second electrodes CE2 can be transmitted to the display driver 200 via a touch detection signal line.

[0249] For example, during the touch detection period, the pixel driver circuit PD can provide the touch driver signal to the second electrodes CE2 and can transmit the touch detection signal received by the second electrodes CE2 to the display driver 200 via a touch detection signal line. This touch detection method is referred to as an intrinsic capacitance method.

[0250] The function, as described above, can be executed simultaneously in each of the pixel driver circuits PD.

[0251] In this case, the touch driver signal can be generated in the pixel driver circuit PD or it can be generated in the display driver 200 and transmitted to the pixel driver circuit PD. However, for the sake of simplicity, a display device in which a touch driver signal is generated in the pixel driver circuit PD is described below as an example of a display device according to the present disclosure.

[0252] Thirdly, as described above, in a display device that uses the self-capacitance method, each of the contact electrodes TE, which are in Fig. 10 are shown, can be controlled independently and a touch coordinate can correspond to each of the touch electrodes TE.

[0253] For example, in a display device using the self-capacitance method, the pixel driver circuit PD can transmit a touch driver signal to the second electrodes CE2 and can receive a touch detection signal from the second electrodes CE2. The touch detection signal can be converted into a digital signal and transmitted to the display driver 200.

[0254] In this case, if there is no touch on the touch electrode TE, the value of the touch detection signals received by the pixel driver circuits PD corresponding to the touch electrode TE can be within a preset range. However, if there is a touch on the touch electrode TE, the value of the touch detection signals received by the pixel driver circuits PD corresponding to the touch electrode TE can be outside of a preset range. Using this difference, the display driver 200 can detect a touch on the touch electrode TE.

[0255] However, in a display device according to an implementation of the present disclosure, a touch can be detected using a counter-capacitance method.

[0256] For example, in a display panel 100 to which the counter-capacitance method is applied, as in Fig. Figure 10 shows that first sub-driver electrodes TX1a, TX1b and TX1c, which form a first driver electrode TX1, and sub-receive electrodes RX1a, RX3a and RX5a, which form receive electrodes RX, are alternately provided on top of the display panel 100.

[0257] Second sub-driver electrodes TX2a, TX2b and TX2c, forming a second driver electrode TX2, and sub-receive electrodes RX2a, RX4a and RX6a, forming receive electrodes RX, can be provided alternately under the first driver electrode TX1.

[0258] In this case, the first sub-driver electrodes TX1a, TX1b, and TX1c and the second sub-driver electrodes TX2a, TX2b, and TX2c are not arranged in a straight line in the second direction Y, but are offset diagonally. Accordingly, the sub-driver electrodes and the sub-receiver electrodes are arranged alternately in the second direction Y.

[0259] Due to the arrangement structure described above, seventh sub-driver electrodes TX7a, TX7b and TX7c, which form a seventh driver electrode TX7, and sub-receive electrodes RX1d, RX3d and RX5d, which form receive electrodes RX, can be alternately provided on the lowest part of the display panel 100.

[0260] In this case, in the self-capacitance method, each of the sub-driver electrodes and the sub-receiver electrodes can correspond to the touch electrode TE and can correspond to a touch coordinate.

[0261] For example, each of the sensing parts 440 contained in the pixel driver circuits PD, corresponding to the sub-driver electrodes during the touch sensing period, can provide a touch driver signal to the second electrodes CE2.

[0262] In this case, each of the sensing parts 440 contained in the pixel driver circuits PD, corresponding to the sub-receiving electrodes, can convert an analog touch sensing signal received from the second electrodes CE2 into a digital touch sensing signal and can transmit the digital touch sensing signal to the display driver 200.

[0263] The display driver 200 can detect a touch on the display panel 100 using touch detection signals received by the pixel driver circuits PD, which correspond to a sub-receiving electrode.

[0264] For example, if a touch occurs at the 2b-th sub-driver electrode TX2b among the 2nd sub-driver electrodes TX2a, TX2b and TX2c that form the second driver electrode TX2, the value of the touch detection signals corresponding to the 2a-th sub-receiver electrode RX2a among the 2nd sub-receiver electrodes RX2a, RX2b and RX2c that form the second receiving electrode RX2 may be outside the range of touch detection signals when there is no touch, and the value of the touch detection signals corresponding to the 4a-th sub-receiver electrode RX4a among the 4th sub-receiver electrodes RX4a, RX4b and RX4c that form the fourth receiving electrode RX4 may be outside the range of touch detection signals when there is no touch.

[0265] Accordingly, the display driver 200 can determine that a contact has occurred in the 2b-th sub-driver electrode TX2b, which is provided between the 2a-th sub-receiver electrode RX2a and the 4a-th sub-receiver electrode RX4a.

[0266] For example, when the touch driver signal is transmitted to the sub-driver electrode where the touch occurs, the value of the touch detection signals received by the sub-receiver electrode adjacent to the sub-driver electrode where the touch occurs may be outside the reference range when there is no touch. Accordingly, the display driver 200 can determine the position of the sub-driver electrode where the touch occurs using this difference.

[0267] As another example, if a touch occurs at the sub-receiver electrode, the value of the touch detection signals received by the pixel driver circuits corresponding to the sub-receiver electrode where the touch occurs may differ from the value of the touch detection signals received by the pixel driver circuits corresponding to the sub-receiver electrode where the touch does not occur. Therefore, the display driver 200 can use this difference to determine the position of the sub-receiver electrode where the touch occurs.

[0268] Additionally, even if the sub-driver electrodes and the sub-receive electrodes do not overlap in the thickness direction of the display panel 100 and are arranged adjacent to each other on the plane of the display panel 100, as shown in Fig. As shown in Figure 10, touch driver signals transmitted to the sub-driver electrodes influence the adjacent sub-receiver electrodes. In this case, touch detection signals corresponding to touch driver signals can be generated by the sub-receiver electrodes. Accordingly, the display driver 200 can detect a touch on the display panel 100 by analyzing the values ​​of the touch detection signals.

[0269] Fourthly, as described above, in a display device 1000 according to an implementation of the present disclosure, a touch can be detected using a self-capacitance method and a touch can be detected using a counter-capacitance method.

[0270] Furthermore, contact can be detected using an own capacity method and a counter capacity method.

[0271] For example, during an initial touch detection period, the pixel driver circuits PD, provided in each of the touch electrodes TE, can provide a touch driver signal to the second electrodes CE2 and can transmit the touch detection signal received from the second electrodes CE2 to the display driver 200. In this case, the display driver 200 can detect a touch in each of the touch electrodes TE using the received touch detection signals.

[0272] In this case, during a second touch detection period, the pixel driver circuits PD, contained in the touch electrodes TE corresponding to the sub-driver electrodes beneath the touch electrodes TE, can provide a touch driver signal to the second electrodes CE2. Conversely, the pixel driver circuits PD, contained in the touch electrodes TE corresponding to the sub-receiver electrodes beneath the touch electrodes TE, can receive an analog touch detection signal from the second electrodes CE2, convert the received analog touch detection signal into a digital touch detection signal, and then transmit the converted touch detection signal to the display driver 200. In this case, the display driver 200 can detect a touch in each of the touch electrodes TE using the procedure described above.

[0273] Fig. Figure 11A is an exemplary diagram showing structures of a sub-touch electrode and a pixel driver circuit used in a display device according to an implementation of the present disclosure. Fig. Figure 11B is an exemplary diagram showing a connection structure of a sub-touch electrode and a pixel driver circuit used in a display device according to an implementation of the present disclosure, and Fig. Figure 11C is an exemplary diagram showing a connection relationship between a pixel driver circuit and light emission devices used in a display device according to an implementation of the present disclosure.

[0274] The following descriptions contain details relating to Fig. 1 to Fig. Details described in the 10 sections are the same or similar, have been omitted, or are briefly described.

[0275] As in Fig. As shown in Figure 11A, the pixel driver circuit PD can include a subpixel driver part 450 for providing anode voltages for anode electrodes 134 provided in the subpixels SP, and a cathode electrode driver part 420 for providing a cathode voltage or touch driver signal for a second electrode CE2, which is shared in at least two subpixels SP.

[0276] As described above, the second electrodes CE2, which are controlled by a pixel driver circuit PD, are referred to as sub-touch electrodes STE.

[0277] The sub-contact electrode STE can have at least two second electrodes CE2.

[0278] As described above, at least two light emission devices ED can be connected to a pixel driver circuit PD. Additionally, a second electrode CE2 can be connected to at least two light emission devices ED.

[0279] For the sake of simplicity, the following description describes a display device that has a pixel driver circuit PD to which 16 pixels PX are connected in a 4x4 shape, as shown in Fig. Figure 11A is described as an example of a display device according to an implementation of the present disclosure. Additionally, the display device shown in Figure 11A includes the following features: Fig. Figure 11A shows pixels PX arranged in a 4x4 configuration connected to the pixel driver circuit PD, but in the display device according to one implementation of the present disclosure, pixels PX arranged in a 4Nx4M configuration (N and M being natural numbers) can be connected to the pixel driver circuit PD. For example, in Fig. 11B Pixel PX, arranged in a 16x16 shape, are connected to the pixel driver circuit PD.

[0280] For example, as in Fig. Figure 11A shows the pixel driver circuit PD being connected to four pixels PX provided along the first direction X and four pixels PX provided along the second direction Y.

[0281] In this case, a second electrode CE2, controlled by the pixel driver circuit PD, can be connected to the light emission devices DE, which are provided in at least two subpixels SP.

[0282] In particular, the second electrode CE2 can be connected to at least two light emission devices DE provided along the first direction X of the display panel 100, and at least two second electrodes CE2 provided along the second direction Y can be separated from each other.

[0283] If four pixels PX are provided along the first direction X and one pixel PX has three subpixels SP, then 12 subpixels PX can be provided along the first direction X.

[0284] In this case, if the second electrode CE2, which is provided along the first direction X, is shared by the two subpixels SP, six second electrodes CE2 can be provided along the first direction X.

[0285] Accordingly, a pixel driver circuit PD can be connected to 24 (= 6 × 4) second electrodes CE2.

[0286] However, for the sake of simplicity, the following description will explain how in Fig. Figure 11A shows the display device according to an implementation of the present description, by taking as an example a display device in which four pixels PX provided along the first direction X are connected to a second electrode CE2.

[0287] In this case, the pixel driver circuit PD can be connected to the four second electrodes CE2.

[0288] For the sake of simplicity, the following describes a display device according to an implementation of the present disclosure using a pixel driver circuit PD to which 16 pixels PX are connected in a 4x4 shape, and a second electrode CE2 connected to four pixels PX along the first direction X, as shown in Fig. 11A is shown and described.

[0289] First, the subpixel driver part 450 is described as follows.

[0290] The following describes how in Fig. 4 and Fig. Figure 11A shows a circuit provided in the subpixel driver section 450 for driving at least one light emission device ED, referred to as a pixel circuit PC. For example, the pixel circuit PC may include a driver transistor TDR and a light emission transistor TEM, as shown in Fig. Figure 4 shows that a sampling signal SC, capable of turning on the driver transistor TDR, can be applied to the gate of the driver transistor TDR. The sampling signal SC can be a DC power source capable of continuously turning on the driver transistor TDR. For example, a fixed reference voltage Vref can be applied to the gate of the driver transistor TDR for each frame.

[0291] A light emission signal EM can be supplied to the gate of the light emission transistor TEM. The light emission signal EM can be a pulse width modulation (PWM) signal. The amount of current supplied to the light emission device ED can be controlled by the light emission signal EM, and thus light of varying brightness can be emitted by the light emission device ED. At least one pixel circuit PC can be provided in the subpixel driver section 450.

[0292] In this case, a high-potential power supply voltage VDD can be provided to the first electrode of the driver transistor TDR, which is located in the pixel circuit PC. The high-potential power supply voltage VDD can be provided by a 500 power supply located outside the pixel driver circuit PD.

[0293] The sampling signal SC and the light emission signal EM can be transmitted by a control signal generation section located outside the pixel driver circuit PD. For example, the sampling signal SC and the light emission signal EM can be transmitted by a control signal generation section contained within the timing control device 300. In this case, the light emission signal EM can be generated in the subpixel driver section 450 using image signals transmitted by the timing control device 300.

[0294] For example, as in Fig. Figure 11A shows that when four pixels PX connected to the pixel driver circuit PD are provided in a row extending along the first direction X, 16 pixels PX are provided in four rows 1H, 2H, 3H and 4H.

[0295] To provide an additional description, each of the four lines can be provided along the first direction X, and the four lines along the second direction Y can be spaced apart from each other.

[0296] In this case, in order to output light from the light emission devices ED provided in the first line 1H, light emission signals EM and sampling signals pixel circuits PC can be provided, which are connected to the light emission devices ED provided in the first line 1H.

[0297] As described above, the sampling signal SC can be a direct current (DC) power source capable of continuously turning on the driver transistor TDR, and the light emission signal EM can be a pulse width modulation (PWM) signal.

[0298] The light emission transistor TEM can be switched on by the sampling signal SC, and thus the high-potential power supply voltage VDD of the anode electrode 134 of the light emission device ED can be provided by the driver transistor TDR, the light emission transistor TEM and the first electrode CE1.

[0299] In this case, as described above, the light emission signal EM applied to the gate electrode of the light emission transistor TEM can be a pulse width modulation (PWM) signal, and the pulse width of the light emission signals EM provided to the pixel circuits PC connected to the anode electrodes 134 of the light emission devices ED provided in the first row 1H can be adjusted differently depending on the brightness of light emitted by the light emission devices ED.

[0300] For example, the pulse width of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits light at high brightness may be larger than the pulse width of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits light at low brightness.

[0301] In this case, if a high-level pulse is provided to the gate of the light emission transistor TEM, the light emission transistor TEM can be turned on.

[0302] As the period during which the light-emitting transistor TEM is switched on increases, the amount of current supplied to the light-emitting device ED by the light-emitting transistor TEM can also increase. The luminance of the light-emitting device ED can vary based on the magnitude of the current flowing to the light-emitting device ED.

[0303] Therefore, if the pulse width of the light emission signal EM increases, the luminance of light emitted by the light emission device ED can increase.

[0304] Similarly, if the pulse width of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits high-brightness light and the pulse width of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits low-brightness light are equal, the number of pulses of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits high-brightness light can be greater than the number of pulses of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits low-brightness light.For example, the frequency of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits light at high brightness may be higher than the frequency of the light emission signal EM provided to the pixel circuit PC connected to the light emission device that emits light at low brightness.

[0305] As the frequency increases, the number of pulses increases. As the number of pulses supplied to the light-emitting transistor TEM increases, the number of times the light-emitting transistor TEM is switched on also increases. As the number of times the light-emitting transistor TEM is switched on increases, the amount of current flowing through the light-emitting transistor TEM to the light-emitting device ED can also increase.

[0306] As described above, since the luminance of the light-emitting device ED can be changed depending on the size of the current flowing to the light-emitting device ED, if the frequency of the light-emitting signal EM increases or the number of pulses of the light-emitting signal EM increases, the luminance of light emitted by the light-emitting device ED can increase.

[0307] For example, the timing control device 300 or the subpixel driver part 450 can provide light emission signals EM with different frequencies or different pulse widths to the light emission transistor TEM provided in the pixel circuit PC.

[0308] Accordingly, light with different luminance can be emitted by the light emission devices ED, which are connected to the pixel driver circuit PD.

[0309] Next, the cathode electrode driver section will be described as follows.

[0310] When the sampling signal SC is provided to the driver transistor TDR, the cathode electrode driver section can provide 420 cathode voltages to the second electrode CE2.

[0311] For example, as in Fig. Figure 11A shows that when 16 pixels PX are connected to the pixel driver circuit PD in a 4X4 shape and a second electrode CE2 is connected to four pixels PX provided along the first direction X, 16 pixels PX are provided in four rows 1H, 2H, 3H and 4H and the four rows 1H, 2H, 3H and 4H can be spaced apart from each other along the second direction Y.

[0312] In this case, four pixels PX, provided in each of the four rows 1H, 2H, 3H, and 4H, are connected to a second electrode CE2. Accordingly, four second electrodes CE2 are provided in the display panel 100 to control the 16 pixels PX.

[0313] The four second electrodes CE2 are connected to a pixel driver circuit PD. These four second electrodes CE2, connected to a pixel driver circuit PD, are referred to as sub-touch electrodes STE. For example, the sub-touch electrode STE has four second electrodes CE2.

[0314] To provide an additional description, at least one second electrode CE2 connected to the pixel driver circuit PD can be provided along the first direction X or line of the display panel 100, and at least two light emission devices ED connected to the second electrode CE2 can be provided in a line along the first direction X or line.

[0315] In the example above, three subpixels SP are provided in each of the four pixels PX provided in the first row 1H.

[0316] Accordingly, when anode voltages are supplied by the 12 pixel circuits PC, which are connected to the 12 subpixels SP provided in the first row 1H, to the 12 anode electrodes 134 provided in the 12 subpixels SP, the cathode electrode driver part 420 can supply a cathode voltage to the second electrodes CE2 in the first row 1H. Accordingly, light can be emitted from the subpixels SP provided in the first row 1H.

[0317] This operation can be performed simultaneously (or concurrently in some implementations) in subpixels SP provided in the first row 1H and connected to other pixel driver circuits PD. Accordingly, light can be emitted simultaneously from all subpixels SP provided in the first row 1H of display panel 100.

[0318] Furthermore, when anode voltages are supplied by the 12 pixel circuits PC, which are connected to the 12 subpixels SP provided in the second row 2H, to the 12 anode electrodes 134 provided in the 12 subpixels SP, the cathode electrode driver part 420 can supply a cathode voltage to the second electrodes CE2 provided in the second row 2H. Accordingly, light can be emitted from the subpixels SP provided in the second row 2H.

[0319] This operation can be performed simultaneously in subpixels SP provided in the second row 2H and connected to other pixel driver circuits PD. Accordingly, light can be emitted simultaneously from all subpixels SP provided in the second row 2H of display panel 100.

[0320] Through the processes described above, light can be emitted sequentially from subpixels SP provided in all lines of the display panel 100, and thus an image can be displayed through the display panel 100.

[0321] The subpixels SP can be individually controlled by the structure and the control method, as described above.

[0322] To perform the process described above, the cathode electrode driver part 420 can be used, as shown in Fig. Figure 11A shows a sensing part 440 for providing a cathode voltage or a touch control signal for the second electrodes CE2, a sensing switch 430 for transferring energy transmitted by the energy part 500 to the sensing part 440 or for blocking the energy transmitted by the energy part 500 depending on a touch enable signal, and a control switch part 410 for providing a cathode voltage for the second electrodes CE2 during the display period and for connecting the sensing part to the second electrodes CE2 during the touch sensing period.

[0323] The control switch section 410 includes control switches 411. Each of the control switches 411 can connect the second electrode CE2 to the sensing section 440 or the cathode voltage supply section 510.

[0324] The cathode voltage supply section 510 can generate a cathode voltage. The cathode voltage supply section 510 can be provided independently of the power section 500, but can also be contained within the power section 500, as shown in Fig. Shown in 11A.

[0325] Each of the control switches 411 can connect the second electrode CE2 to the cathode voltage supply part 510 or to the sensing part 440 in response to a control signal transmitted by the display driver 200 or the time control device 300.

[0326] For example, the control switch 411 can connect the second electrode CE2 to the cathode voltage supply unit 510 during the display period and the second electrode CE2 to the cathode voltage supply unit 510 during the touch detection period.

[0327] In particular, the control switch section 410 can sequentially supply cathode voltages to the second electrodes CE2 during the display period and simultaneously supply touch driver signals to the second electrodes CE2 during the touch detection period. For this purpose, the control switch section 410 can be configured in various structures.

[0328] Each of the control switches 411 can be turned on or off by a control signal received from the time control device 300 or the display driver 200. The control signal can include a touch synchronization signal, which is described below.

[0329] In the example above, a sub-touch electrode STE has four second electrodes CE2 and the four second electrodes CE2 are connected to a pixel driver circuit PD.

[0330] In this case, the control switch section 410 can have four control switches 411. Each of the four control switches 411 is connected to the second electrode CE2, the cathode voltage supply section 510, and the sensing section 440.

[0331] During the display period in which an image is displayed on the display panel 100, the control switch 411 can connect the second electrode CE2 to the cathode voltage supply unit 510.

[0332] For example, each of the pixel driver circuits PD can provide a cathode voltage to at least one second electrode CE2, which is provided along the first direction X or line of the display panel 100, during the display period.

[0333] In the example above, a second electrode CE2 is provided in a line. Accordingly, the control switch 411 can connect a second electrode CE2, provided in a line, to the cathode voltage supply section 510 during the display period. In this case, the control switch 411 is turned on, and thus the second electrode CE2 can be connected to the cathode voltage supply section 510. Therefore, the second electrode CE2 can be connected to the cathode voltage supply section 510 by the control switch 411.

[0334] However, if two or more second electrodes CE2 are provided in a row, the control switch 411 can connect two or more second electrodes CE2 provided in a row to the cathode voltage supply part 510.

[0335] As described above, if an anode voltage is provided by the subpixel driver part 450 of the anode electrode 134 of the light emission device ED through the first electrode CE1 and a cathode voltage is provided by the cathode electrode driver part 420 of the cathode electrode 135 of the light emission device ED through the second electrode CE2, light can be emitted by the light emission device ED.

[0336] If the cathode voltage is sequentially applied to the four second electrodes CE2, which are provided in the four rows 1H, 2H, 3H and 4H, light can be sequentially emitted from the four rows 1H, 2H, 3H and 4H.

[0337] The same process can be performed in the subpixels SP that are connected to other pixel driver circuits PD.

[0338] Accordingly, light can be emitted sequentially from the lines of display panel 100, and thus an image can be displayed through display panel 100.

[0339] Furthermore, during the touch detection period, in which a touch is detected in the display panel 100, all of the control switches 411 can connect all of the second electrodes CE2 to the detection unit 440. In this case, all of the control switches 411 can be switched on.

[0340] The display period for showing an image and the touch detection period for detecting a touch can be implemented in a time division method.

[0341] For example, each of the pixel driver circuits PD can provide a touch driver signal to all second electrodes CE2 connected to the pixel driver circuit PD during the touch detection period.

[0342] In the example above, one second electrode CE2 is provided in one row, and four second electrodes CE2 are provided in four rows. Accordingly, the control switch 410 can connect all four second electrodes CE2 to the sensing unit 440 during the touch detection period. In this case, the touch driver signal output by the display driver 200 or the sensing unit 440 can be transmitted to the second electrode CE2 via the control switch 411. Furthermore, the touch detection signal generated by the second electrode CE2 can be transmitted to the display driver 200 via the control switch 411.

[0343] If two or more second electrodes CE2 are provided in a row, the control switch 411 can connect the two or more second electrodes CE2 in a row to the sensing part 440.

[0344] If the touch driver signal is simultaneously provided to the four second electrodes CE2, which are provided in the four rows 1H, 2H, 3H and 4H, a touch detection signal can be generated in the four rows.

[0345] The touch detection signal generated in the four lines can be transmitted to the display driver 200 via the control switch section 410 and the detection section 440. In this case, the detection section 440 can convert an analog touch detection signal transmitted by the control switch section 410 into a digital touch detection signal for transmission to the display driver 200. Hereinafter, the analog touch detection signal and the digital touch detection signal are collectively referred to as a single touch detection signal. Operation can be performed similarly in other pixel driver circuits PD.

[0346] Additionally, each of the sensing parts 440 provided in each of the pixel driver circuits PD can provide a touch driver signal to at least one second electrode CE2 during the touch sensing period and can transmit a touch sensing signal received from at least one second electrode to the display driver 200.

[0347] The display driver 200 can determine whether there is a touch on the touch electrode TE, using the touch detection signal transmitted by the at least one pixel driver circuit PD.

[0348] The above describes a control method for a display device that uses the self-capacitance method, but the control method described above can also be applied to a display device that uses the counter-capacitance method and a display device that uses both the self-capacitance method and the counter-capacitance method.

[0349] For example, the control method of the pixel driver circuit PD provided in the display device which uses the self-capacitance method in the display period can be applied equally to the control method of the pixel driver circuit PD provided in the display device which uses the counter-capacitance method in the display period.

[0350] The control method of the pixel driver circuit PD provided in the display device which uses the counter-capacitance method in the touch detection period may vary depending on whether the pixel driver circuit PD is contained in the sub-drive electrode or the sub-receive electrode, as described above.

[0351] The detection switch 430 can be connected between the power unit 500 and the detection unit 440 and can supply power to the detection unit 440 or block power supplied to the detection unit 440.

[0352] The power unit 500 can include a cathode voltage supply unit 510 for generating a cathode voltage and a power supply unit 520 for generating the energy required to drive the sensing unit 440. The power supply unit 520 can generate different amounts of energy for driving the display device as well as the sensing unit 440.

[0353] The display driver 200 can receive a touch activation signal Touch_EN, as shown in Fig. The signal shown in 11G is transmitted to the detection switch 430. The display driver 200 can generate different types of touch activation signals Touch_EN depending on the structure of the touch electrodes TE, a method for detecting a touch, and the number of touch electrodes TE.

[0354] The detection switch 430 is switched on or off depending on the touch activation signal Touch_EN.

[0355] For example, during the display period, in which the cathode voltage is supplied from the cathode voltage supply unit 510 to the second electrode CE2 via the control switch unit 410, the detection switch 430 can be switched off by the touch activation signal Touch_EN. Accordingly, the detection unit 440 is not activated during the display period.

[0356] However, during the touch detection period, the detection switch 430 can be switched on by the touch activation signal Touch_EN, and accordingly, energy can be supplied from the energy supply unit 520 to the detection unit 440.

[0357] Accordingly, the detection unit 440 can be controlled, and accordingly the touch driver signal can be provided to the second electrodes CE2 and the touch detection signal can be transmitted to the display driver 200.

[0358] In particular, in a display device according to an implementation of the present disclosure, the detection switch 430 can only be switched on during a period in which the touch driver signal is supplied to the second electrodes CE2 in the touch detection period. For example, even in the touch detection period, the detection switch 430 can be switched off during a period in which the touch driver signal is not supplied to the second electrodes CE2.

[0359] For example, energy can be supplied to the sensing element 440 only during the minimum period required to detect a touch. Accordingly, the energy consumption of the sensing element 440 can be reduced or minimized, and thus the energy consumption of the pixel driver circuit PD can be reduced or minimized, and finally the energy consumption of the display device can be reduced or minimized.

[0360] Thirdly, as described above, in the display device according to an implementation of the present disclosure, pixels PX arranged in a 4x4 shape, as shown in Fig. As shown in 11A, the pixel driver circuit PD can be connected to pixels PX, which are arranged in a 16x16 shape, as shown in Fig. As shown in Figure 11B, the pixel driver circuit PD may be connected, or pixels PX arranged in various shapes may be connected to the pixel driver circuit PD. The following describes a structure of a display panel 100 used in a display device according to an implementation of the present disclosure, with reference to Fig. 11B and Fig. 11C described. The following descriptions provide details relating to Fig. 1 to Fig. Details described in section 11A are identical or similar, omitted, or briefly described. In a display device according to an implementation of the present disclosure, a pixel driver circuit PD and pixels PX1 to PX16, which have light emission devices ED electrically connected to the pixel driver circuit PD, may be provided.

[0361] For example, as in Fig. As shown in 11B, the first to sixteenth pixels PX1 to PX16 are arranged along the first direction X.

[0362] A light-emitting device (LED) can be located in a subpixel (SP). At least one LED can be located in a subpixel (SP). For example, two LEDs can be located in a subpixel. One of the two LEDs can be a primary LED, and the other can be a redundant LED. The LED can be a micro-LED.

[0363] A red subpixel, a green subpixel, and a blue subpixel can be repeatedly arranged along the first direction X.

[0364] Subpixels that emit light of the same color can be arranged along the second direction Y. For example, subpixels SP that emit light of any color from red, green, and blue can be arranged along the second direction Y. The subpixels SP that emit the same color can be electrically connected by a first electrode line AND, as shown in Fig. 11C is shown. The first electrode lead AND can be connected to the first electrode CE1.

[0365] The first electrode line AND can have a first line AND_P and a second line AND_R. The first line AND_P and the second line AND_R can be arranged such that they are spaced apart from each other in the first direction X. The first line AND_P can be connected to the main light-emitting device, and the second line AND_P can be connected to the redundant light-emitting device.

[0366] Each of the second electrodes CE2 can extend in the first direction X, as shown in Fig. Figure 11B shows that each of the second electrodes CE2 can also be positioned to be spaced apart from each other along the second direction Y. Accordingly, each of the second electrodes CE2 can be connected to the first through sixteenth pixels PX1 through PX16, which are located in each of the rows 1H through 16H.

[0367] The pixel driver circuit PD can be connected to pixels PX1 to PX16 via the first electrodes CE1 and the second electrodes CE2. Accordingly, the pixel driver circuit PD can control the light emission devices ED, which are arranged in the first to sixteenth row 1H to 16H.

[0368] To provide an additional description, the pixel driver circuit PD can be electrically connected to the light emission devices arranged in the first to 16th row 1H to 16H through the first electrodes CE1 and the second electrodes CE2, and the pixel driver circuit PD can provide the control signal and energy for the light emission devices ED through the first electrodes CE1 and the second electrodes CE2 to control the light emission operation of the light emission devices ED.

[0369] In this case, the second electrodes CE2 can be connected to the pixels PX and the pixel driver circuit PD in the form shown in Fig. As shown in Figure 11B, the first electrodes CE1 provided in pixels PX can be connected to the first electrode leads AND in the form shown in Figure 11B. Fig. 11C is shown, and the first electrodes CE1 can be connected to the pixel driver circuit PD via the first electrode lines AND.

[0370] For example, in the light emission device part EDU, as in Fig. As shown in 11C, the first electrode lines AND are arranged on the upper or lower side of the pixel driver circuit PD.

[0371] As in Fig. As shown in Figure 11C, a first electrode line AND can connect the first electrodes CE1 of the light emission devices ED, which are adjacent to each other in the vertical direction, under the light emission devices ED.

[0372] In this case, a pixel circuit PC can be AND connected to any of the first electrode lines. However, the pixel circuit PC can be AND connected to at least two first electrode lines. In this case, the anode voltage can be sequentially AND applied to at least two first electrode lines.

[0373] The following is a brief description of the basic control method of the display device according to the present disclosure during the display period in which the image is displayed.

[0374] Fig. Figure 11D is an exemplary diagram showing a light emission signal applied to a display device according to an implementation of the present disclosure, and Fig. Figure 11E is an exemplary diagram showing a pixel circuit used in a display device according to an implementation of the present disclosure.

[0375] As described above, the pixel driver circuit PD can control the light emission operation of the light emission device ED by using the pulse width of the light emission signal EM.

[0376] For example, as in Fig. Figure 11D shows that the pixel driver circuit PD sets the pulse width of the light emission signal EM, and thus light corresponding to 1 gray to 32 gray can be emitted through the light emission device ED.

[0377] The pixel driver circuit PD can provide a light emission signal EM with a pulse width set based on “gray” to a gate electrode of the light emission transistor TEM.

[0378] In this case, a fixed light emission current can be applied to the light emission device ED by the light emission transistor TEM, and thus the light emission device ED can emit light.

[0379] For example, if eight light-emitting devices ED are connected to a first electrode line AND, the eight light-emitting devices ED can emit light by means of a constant current with the same current value.

[0380] In this case, in a typical organic light emission indicator device, the amount of current flowing to the light emission device differs because the voltage applied to the gate electrode of the driver transistor varies from one light emission device to another, and the time for which the current flows to the light emission devices is the same.

[0381] In the display device according to one implementation of the present disclosure, however, the amount of current flowing to the light emission devices ED is the same, but the time for which the current flows is different for each light emission device. That is, the time for which the current flows through the light emission device can be adjusted by the pulse width of the light emission signal (PWM) signal EM.

[0382] For example, the pixel circuitry of the PC, as in Fig. 4 and Fig. Figure 11E shows a driver transistor TDR and a light emission transistor TEM, and is connected to light emission devices. Reference numbers 1H, 2H, and 8H, which are shown in Fig. Figure 11E refers to light emission devices ED, which are provided in the first line 1H, the second line 2H and the eighth line 8H, which are shown in Fig. 11B are shown.

[0383] A high-potential voltage AVDD can be applied to the first electrode of the driver transistor TDR, a light-emitting transistor TEM can be connected to the second electrode of the driver transistor TDR, and a reference voltage VREF or initialization voltage VINT can be applied to the gate electrode of the driver transistor TDR. The reference voltage VREF or the initialization voltage VINT can be a sampling signal SC.

[0384] For example, a reference voltage VREF can be applied to the gate electrode of the driver transistor TDR by a switching device, or an initialization voltage VINT can be applied to the gate electrode of the driver transistor TDR by a voltage buffer (VB) and a switching device.

[0385] A driver transistor TDR can be connected to the first electrode of the light emission transistor TEM, light emission devices can be connected to the second electrode of the light emission transistor TEM, and a light emission signal EM can be applied to the gate electrode of the light emission transistor TEM.

[0386] The following defines a display period, during which an image is displayed, and a touch detection period, during which a touch is detected, with reference to Fig. 11F and Fig. 11G briefly described.

[0387] Fig. Figure 11F is an exemplary diagram showing a touch detection method for a display device according to an implementation of the present disclosure, and Fig. Figure 11G is an exemplary diagram showing a display period and a touch detection period applied to a display device according to an implementation of the present disclosure.

[0388] In the display device according to one implementation of the present disclosure, the second electrodes CE2 can be used as a touch electrode TE, and this structure is referred to as an in-cell touch structure. Since no separate touch electrode is provided in the display device according to one implementation of the present disclosure, the thickness of the display panel can be reduced.

[0389] For example, if the cover element 120 is touched by the user, the first capacitance C1 between the second electrodes CE2 and the cover element 120, which is provided on the display panel 100, and the second capacitance C2 between the second electrodes CE2 and the signal lines can be changed, as shown in Fig. 11F is shown.

[0390] The touch detection signal, generated by the change in the first capacitance C1 and the second capacitance C2, can be transmitted to the pixel driver circuit PD via the second electrode CE2. In this case, the pixel driver circuit PD can be connected to ground (GND).

[0391] The touch detection signals transmitted to the pixel driver circuit PD can be transmitted to the display driver 200, and the display driver 200 can determine whether there is a touch on the touch electrode TE, using the touch detection signals transmitted by the at least one pixel driver circuit PD.

[0392] A frame period (1-frame period) can refer to a period in which an image is displayed by display panel 100. As in Fig. As shown in Figure 11G, a frame period can have a display period (DP) and a touch detection period (TP). Within a frame period, the touch detection period (TP) and the display period (DP) can be different. For example, the touch detection period (TP) can be shorter than the display period (DP).

[0393] Within a frame period, the touch detection period (TP) and the display period (DP) can be repeated at least once. For example, as shown in Fig. As shown in Figure 11G, the touch detection period TP and the display period DP are repeated four times in one frame period (1-frame period). However, a display device according to an implementation of the present disclosure is not limited to this. Accordingly, the number of times the touch detection period TP and the display period DP are repeated in one frame period can be varied, and the touch detection period TP and the display period DP can be repeated at intervals of at least two frame periods.

[0394] The time control device 300 can generate a touch synchronization signal Tsync and transmit it to the display driver 200.

[0395] The display driver 200 can perform an operation to display an image depending on a touch synchronization signal Tsync or an operation to detect a touch.

[0396] When a touch signal S1, indicating the touch detection period TP, is received among the touch synchronization signals Tsync, which distinguishes the touch detection period TP from the display period DP, the display driver 200 can transmit the touch activation pulse E1, which forms the touch activation signal Touch_EN, to the detection switch 430.

[0397] In the following description, the touch synchronization signal Tsync can have a touch signal S1, which specifies the touch detection period TP, and a display signal S2, which specifies the display period DP. When the touch signal S1 is received, the display driver 200 can perform an operation to detect a touch, and when the display signal S2 is received, the display driver 200 can perform an operation to display an image.

[0398] In the following description, the touch activation signal Touch_EN can have a touch activation pulse E1 to switch on the detection switch 430 and a touch activation switch-off signal E2 to switch off the detection switch 430.

[0399] When the touch activation pulse E1 is received, the detection switch 430 can connect the power supply unit 520 to the detection unit 440.

[0400] In this case, the sensing unit 440 can be driven by energy supplied by the energy supply unit 520 to provide a touch driver signal to the second electrodes CE2. Accordingly, the touch sensing signal received by the second electrodes CE2 can be transmitted to the display driver 200, and the display driver 200 can determine whether a touch has occurred.

[0401] If the touch activation pulse E1 is not received, the sensing switch 430 can block the power supply section 520 from the sensing section 440. If the touch activation pulse E1 is not received, this means that the touch activation deactivation signal E2 is received.

[0402] For example, if the touch activation switch-off signal E2 is received, the detection switch 430 can be switched off, and accordingly no energy is supplied to the detection part 440.

[0403] Accordingly, the touch driver signal cannot be provided by the sensing unit 440 to the second electrodes CE2, and the touch detection signal cannot be transmitted to the display driver 200. This means that when the touch activation / deactivation signal E2 is received, the touch detection operation is not executed. Consequently, the energy consumption of the sensing unit 440 can be reduced.

[0404] The width of the touch activation pulse E1 can be the same as the width of the touch signal S1, or it can be different, as in Fig. 11G is shown, smaller than the width of the touch signal S1.

[0405] For example, the width of the touch activation pulse E1 during a normal touch detection period may be equal to the width of the touch signal S1, and the width of the touch activation pulse E1 during a wake-up touch detection period may be less than the width of the touch signal S1.

[0406] In the following description, the touch detection period can include the normal touch detection period and the wake-up touch detection period.

[0407] The normal touch detection period refers to a touch detection period that continues after a touch is detected, and the wake-up touch detection period refers to a touch detection period that continues after a no-touch is detected. The wake-up touch detection period can continue until a touch is detected.

[0408] For example, the touch detection period can be the normal touch detection period or the wake-up touch detection period. That is, the normal touch detection period and the wake-up touch detection period do not occur simultaneously.

[0409] During the wake-up touch detection period, as described above, the width of the touch activation pulse E1 can be smaller than the width of the touch signal S1, and accordingly the control time of the detection unit 440 can be reduced, and thus the energy consumption of the detection unit 440 can be reduced.

[0410] During the normal touch detection period, the width of the touch activation pulse E1 can be equal to the width of the touch signal S1, as described above. However, even during the normal touch detection period, the detection unit 440 does not need to be activated during the period in which the touch driver signal is not supplied to the second electrode CE2. Therefore, even during the normal touch detection period, the width of the touch activation pulse E1 can be smaller than the width of the touch signal S1.

[0411] The following describes various control methods for a display device according to an implementation of the present disclosure.

[0412] Fig. 12A to Fig. Figure 12E contains exemplary diagrams showing various control methods for a display device according to one implementation of the present disclosure. Details relating to the following descriptions are provided below. Fig. 1 to Fig. Details described in section 11G are identical or similar, omitted, or briefly described. Additionally, a control procedure during the touch detection period is described below.

[0413] First, it shows Fig. 12A a method for controlling a display device which uses an intrinsic capacitance method, and in particular a control method in a normal touch detection period.

[0414] As described above, the touch synchronization signal Tsync can have a touch signal S1, which specifies the touch detection period TP, and a display signal S2, which specifies the display period DP.

[0415] If the touch signal S1 is received during the normal touch detection period, the display driver can transmit the touch activation pulse E1 to the detection switches 430. Accordingly, the detection switches 430 can be switched on, power can be supplied to the detection unit 440, and the detection unit can be controlled.

[0416] The normal touch detection period refers to a touch detection period that lasts after it has been determined that a touch has occurred, and thus there is a high probability that the touch will be detected.

[0417] Therefore, the touch driver signals (TDS) must be quickly supplied to the touch electrodes (TE). The touch driver signals (TDS) can be pulse width modulation (PWM) signals.

[0418] For example, if the display panel 100, which is in Fig. As shown in Figure 10, using only the self-capacitance method, seven touch electrodes TE can be provided along the second direction Y. In this case, six touch electrodes TE can be provided in each of the seven touch electrode rows formed on the display panel 100, which is shown in Figure 10. Fig. 10 is shown.

[0419] If four touch detection periods TP are included in a frame period, the detection unit can provide 440 touch driver signals TDS to the touch electrodes TE, which are provided in seven touch electrode rows, for each touch detection period TP.

[0420] However, the sensing part can provide 440 touch driver signals TDS to the touch electrodes TE, which are provided in four of the seven touch electrode rows, during a first touch sensing period TP1 of four touch sensing periods TP, and the sensing part can provide 440 touch driver signals TDS to the touch electrodes TE, which are provided in the remaining three of the seven touch electrode rows, during a second touch sensing period TP2 of four touch sensing periods TP.

[0421] During the first touch detection period TP1, the detection part 440 can simultaneously provide touch driver signals TDS to the touch electrodes TE provided in the four touch electrode rows, or it can sequentially provide touch driver signals TDS to the four touch electrode rows.

[0422] The period in which the touch driver signals TDS are sequentially provided to the three touch electrode rows in the second touch detection period TP2 can be shorter than the period in which the touch driver signals TDS are sequentially supplied to the four touch electrode rows in the first touch detection period TP1.

[0423] Furthermore, if touch driver signals TDS are simultaneously provided to the touch electrodes TE, which are provided in different touch electrode rows, in each of the first touch detection period TP1 and the second touch detection period TP2, the period in which touch driver signals TDS are simultaneously provided to four touch electrode rows in the first touch detection period TP1 can be longer than the period in which touch driver signals TDS are simultaneously provided to three touch electrode rows in the second touch detection period TP2, in order to increase touch sensitivity.

[0424] In this case, the width of the touch activation pulse E1 provided to the detection switch 430 during the first touch detection period TP1 can be equal to or less than the width of the touch signal S1.

[0425] Furthermore, the width of the touch activation pulse E1 provided to the detection switch 430 during the second touch detection period TP2 can be smaller than the width of the touch activation pulse E1 provided to the detection switch 430 during the first touch detection period TP1.

[0426] Therefore, energy can be withheld from the sensing part 440 if the touch driver signals TDS are not provided to the touch electrodes in the second touch sensing period TP2, and thus the energy consumption of the sensing part 440 can be reduced.

[0427] To provide an additional description, if the sensing part 440 does not need to be activated even during the normal touch sensing period, energy supplied to the sensing part 440 can be blocked, thus reducing the energy consumption of the display device which has the sensing part 440.

[0428] Next, we will show Fig. 12B a control method of a display device which uses a counter-capacitance method and in particular a control method during a normal touch detection period.

[0429] In a display device that uses the counter-capacitance method, the touch driver signal TDS can be sequentially sent to the first driver electrodes TX1 to the seventh driver electrodes TX7, which are located in Fig. Figure 10 shows how the touch driver signals can be provided. For example, during a first touch detection period TP1, the touch driver signals TDS can be provided sequentially to the first driver electrodes TX1 to the fourth driver electrodes TX4, and during a second touch detection period TP2, the touch driver signals TDS can be provided sequentially to the fifth driver electrodes TX5 to the seventh driver electrodes TX7.

[0430] The period during which the touch driver signal TDS is sequentially provided to the first driver electrode TX1 to fourth driver electrode TX4 may be longer than the period during which the touch driver signal TDS is sequentially provided to the fifth driver electrode TX5 to seventh driver electrode TX7.

[0431] Accordingly, the width of the touch activation pulse E1 provided to the detection switch 430 during the first touch detection period TP1 can be equal to or less than the width of the touch signal S1, and the width of the touch activation pulse E1 provided to the detection switch 430 during the second touch detection period TP2 can be less than the width of the touch activation pulse E1 provided to the detection switch 430 during the first touch detection period TP1.

[0432] Therefore, energy can be withheld from the sensing part 440 if the touch driver signals TDS are not provided to the touch electrodes in the second touch sensing period TP2, and thus the energy consumption of the sensing part 440 can be reduced.

[0433] In this case, the sub-receiving electrodes, which are provided in the same touch electrode array as the driver electrode TX to which the touch driver signal TDS is provided, can be provided with the same touch activation pulse E1 as the touch activation pulse E1 applied to the driver electrode TX to which the touch driver signal TDS is provided.

[0434] Accordingly, the width of the touch activation pulse E1 provided to the sensing switch 430 of the sub-receiving electrode during the first touch detection period TP1 can be equal to or less than the width of the touch signal S1, and the width of the touch activation pulse E1 provided to the sensing switch 430 of the sub-receiving electrode during the second touch detection period TP2 can be less than the width of the touch activation pulse E1 provided to the sensing switch 430 of the sub-receiving electrode during the first touch detection period TP1.

[0435] Accordingly, energy can be withheld from the sensing unit 440 if the touch detection signals are not received in the second touch detection period TP2, and thus the energy consumption of the sensing unit 440 can be reduced.

[0436] Next, we will show Fig. 12C a control method of a display device which uses a self-capacitance method or a counter-capacitance method, and in particular a control method during the wake-up touch detection period.

[0437] The wake-up touch detection period refers to a touch detection period that continues after it has been determined that no touch is present, and there is a high probability that no touch will be present during the wake-up touch detection period.

[0438] Therefore, it is not necessary to quickly provide the touch driver signals TDS to the touch electrodes TE.

[0439] Therefore, during the wake-up touch detection period, a touch can be detected on the touch electrodes TE provided in at least one of the seven touch electrode rows, as shown in Fig. 10 shown.

[0440] For example, if the self-capacitance method is used, the touch driver signal TDS can be sent to the touch electrodes TE, which are provided in the first touch electrode row among the seven touch electrode rows, as shown in Fig. As shown in Figure 10, the touch driver signal TDS can be provided to the touch electrodes TE provided in the second touch electrode row during a first touch detection period TP1, and the touch driver signal TDS can be provided to the touch electrodes TE provided in the third touch electrode row during a third touch detection period TP3, and the touch driver signal TDS can be provided to the touch electrodes TE provided in the fourth touch electrode row during a fourth touch detection period TP4.

[0441] Then, in a further frame period, the touch driver signal TDS can be provided to the touch electrodes TE, which are provided in a fifth touch electrode row, during a first touch detection period TP1; the touch driver signal TDS can be provided to the touch electrodes TE, which are provided in the sixth touch electrode row, during a second touch detection period TP2; and the touch driver signal TDS can be provided to the touch electrodes TE, which are provided in the seventh touch electrode row, during a third touch detection period TP3.The touch driver signal TDS can be provided to the touch electrodes TE that are provided in the first touch electrode row during a fourth touch detection period TP4, but the touch driver signal is not provided to the touch electrodes during the fourth touch detection period TP4.

[0442] In this case, a touch of the entire display panel can be detected within two frame periods. Here, the two frame periods mean one period in which a frame period is repeated twice.

[0443] As another example, the touch driver signal TDS can be provided to the touch electrodes TE located in the first touch electrode row and the second touch electrode row during a first touch detection period TP1, the touch driver signal TDS can be provided to the touch electrodes TE located in the third touch electrode row and the fourth touch electrode row during a second touch detection period TP2, the touch driver signal TDS can be provided to the touch electrodes TE located in the fifth touch electrode row and the sixth touch electrode row during a third touch detection period TP3, and the touch driver signal TDS can be provided to the touch electrodes TE located in the seventh touch electrode row during a fourth touch detection period TP4.

[0444] In this case, one touch can be detected on the entire display panel 100 times per frame period.

[0445] This means that in the wake-up touch detection period, the period in which a touch is detected in the entire display panel 100 can be changed in various ways.

[0446] Furthermore, the period in which the touch driver signal is provided to the touch electrodes TE during the wake-up touch detection period may be shorter than the period in which the touch driver signal is provided to the touch electrodes TE during the normal touch detection period.

[0447] Accordingly, the width of the touch activation pulse E1 during the wake-up touch detection period can be smaller than the width of the touch activation pulse E1 during the normal touch detection period, which is described in Fig. 12A and Fig. 12B is shown.

[0448] Accordingly, the energy consumption of the detection unit 440 during the wake-up touch detection period may be less than the energy consumption of the detection unit 440 during the normal touch detection period.

[0449] The above with reference to Fig. The description in section 12C can also be applied even when the countercapacitance method is used.

[0450] Therefore, in the display device that uses the counter-capacitance method, the energy consumption of the sensing part 440 during the wake-up touch sensing period can be less than the energy consumption of the sensing part 440 during the normal touch sensing period.

[0451] Next, we will show Fig. 12D, a control method for a display device that uses the self-capacitance method and the counter-capacitance method, and in particular a control method in the wake-up touch detection period. Details relating to Fig. 12A to Fig. Details described in section 12C are the same or similar, omitted, or briefly described.

[0452] For example, in Fig. 12C, if a touch is detected using a self-capacitance method in the first touch detection period TP1 and the third touch detection period TP3, and a touch is detected using a counter-capacitance method in the second touch detection period TP2 and the fourth touch detection period TP4, the width of the touch activation pulse E1 in each period from the first touch detection period TP1 to the fourth touch detection period TP4 shall be smaller than the width of the touch activation pulse E1 in the normal touch detection period, which is in Fig. 12A and Fig. 12B is shown.

[0453] Therefore, in a display device that uses the self-capacitance method and the counter-capacitance method, the energy consumption of the sensing part 440 during the wake-up touch sensing period can be less than the energy consumption of the sensing part 440 during the normal touch sensing period.

[0454] Furthermore, the energy consumption of the sensing unit 440 during the normal touch sensing period can be less than the energy consumption of the sensing unit 440 used in the conventional display device.

[0455] In a display device that uses the self-capacitance method and the counter-capacitance method, the touch detection period TP using the self-capacitance method and the touch detection period TP using the counter-capacitance method can be continuous, as shown in Fig. 12D representation, and in a frame period the touch detection period TP, which uses the self-capacitance method, and the touch detection period TP, which uses the counter-capacitance method, can only occur once.

[0456] In this case, a touch can be detected using an own capacity method in a first touch detection period TP1 and a touch can be detected using a counter capacity method in a second touch detection period TP2.

[0457] In particular, while the touch signal S1 is being provided, a touch detection using the self-capacitance method and a touch detection using the counter-capacitance method can be performed sequentially.

[0458] In this case, the sum of the widths of the touch activation pulse E1 provided to the sensing switch 430 during the first touch detection period TP1 and the width of the touch activation pulse E1 provided to the sensing switch 430 during the second touch detection period TP2 can be less than the width of the touch signal S1. Furthermore, the width of each of the touch activation pulses E1 can be adjusted to be approximately equal to the period during which the touch driver signal TDS is essentially provided to the touch electrodes TE.

[0459] This means that energy is supplied to the sensing unit 440 only during a period in which a touch is actually detected.

[0460] Therefore, according to a display device as disclosed herein, the energy consumption of the detection part 440 can be reduced and, accordingly, the energy consumption of a display device can be reduced.

[0461] Finally, it shows Fig. 12E a control method of a further display device which uses the own capacity method and the counter capacity method, and in particular a control method during the wake-up touch detection period.

[0462] In a display device that uses the self-capacitance method and the counter-capacitance method, the touch detection period TP using the self-capacitance method and the touch detection period TP using the counter-capacitance method can be continuous, as shown in Fig. 12D and Fig. 12E is shown, and in a frame period the touch detection period TP, which uses the self-capacitance method, and the touch detection period TP, which uses the counter-capacitance method, can only occur once.

[0463] In this case, a touch can be continuously detected in one frame period (hereinafter referred to simply as a first frame) using the self-capacitance method in a first touch detection period TP1 and a second touch detection period TP2, and a touch can be detected in a further frame period (hereinafter referred to simply as the second frame) after the first frame using the counter-capacitance method.

[0464] For example, if the TE contact electrodes, which are in Fig. Figure 10 are shown, divided into two groups along the first direction X, each of which can have contact electrodes TE provided in the form of 3x7 (horizontal x vertical) from a first group and a second group.

[0465] In this case, a touch on the touch electrodes TE provided in the first group can be detected using the self-capacitance method during the first touch detection period TP1 and the second touch detection period TP2 of the first frame, and a touch on the touch electrodes TE provided in the second group can be detected using the counter-capacitance method during the first touch detection period TP1 and the second touch detection period TP2 of the second frame.

[0466] In this case, the sum of the widths of the touch activation pulse E1 provided to the sensing switch 430 during the first touch detection period TP1 of the first frame and the width of the touch activation pulse E1 provided to the sensing switch 430 during the second touch detection period TP2 of the first frame can be less than the width of the touch signal S1 of the first frame. Furthermore, the width of each of the touch activation pulses E1 can be adjusted to be approximately equal to the period in which the touch driver signal TDS is essentially provided to the touch electrodes TE.

[0467] Furthermore, the sum of the widths of the touch activation pulse E1 provided to the sensing switch 430 during the first touch detection period TP1 of the second frame and the width of the touch activation pulse E1 provided to the sensing switch 430 during the second touch detection period TP2 of the second frame can be less than the width of the touch signal S1 of the second frame. Additionally, the width of each of the touch activation pulses E1 can be adjusted to be approximately equal to the period in which the touch driver signal TDS is essentially provided to the touch electrodes TE.

[0468] This means that energy is supplied to the sensing unit 440 only during a period in which a touch is actually detected.

[0469] Therefore, according to a display device as disclosed herein, the energy consumption of the detection part 440 can be reduced and, accordingly, the energy consumption of a display device can be reduced.

[0470] To provide an additional description, in the case of a display device according to an implementation of the present disclosure, as in Fig. 12D and Fig. 12E shows that when the touch signal S1 is received, the display driver 200 sequentially transmits a first activation pulse E1 and a second activation pulse E1 to the detection switch 430.

[0471] In this case, when the first activation pulse E1 is received, the sensing unit 440 can provide the touch driver signal TDS to the second electrodes CE2, convert the analog touch sensing signal received by the second electrodes CE2 into a digital touch sensing signal, and transmit the digital touch sensing signal to the display driver 200. For example, as referred to in Fig. As described in 12D, a touch is detected in the first touch detection period TP1 using the self-capacitance method.

[0472] Then, when the second activation pulse E1 is received, the sensing unit 440 can provide a touch driver signal TDS to the second electrodes CE2, or it can convert an analog touch sensing signal received by the second electrodes CE2 into a digital touch sensing signal and transmit the digital touch sensing signal to the display driver 200. For example, as referred to in Fig. As described in section 12D, a touch is detected in the second touch detection period TP2 using the counter-capacitance method.

[0473] As described above, in a display device according to an implementation of the present disclosure, the width of the touch activation pulse E1 during the wake-up touch detection period can be reduced or minimized, the time for which the detection element 440 is activated can be reduced or minimized, and thus the energy consumption of the detection element 440 can be reduced or minimized. The width of the touch activation pulse E1 can be smaller than the width of the touch signal S1 not only during the wake-up touch detection period but also during the normal touch detection period, and accordingly, the energy consumption of the detection element 440 during the normal touch detection period can be reduced.

[0474] Furthermore, in a display device according to an implementation of the present disclosure, touch electrodes provided along the first direction X or the second direction Y of the display panel 100 can be divided into groups, and a touch can be detected by sequentially activating groups. In this case, groups can be set in various shapes and numbers, and accordingly, the period or ratio in which a touch is detected on the display panel 100 can be varied.

[0475] Fig. 13 to Fig. Figure 16 are diagrams showing electronic devices in which a display device is used in accordance with implementations of the present disclosure.

[0476] With reference to Fig. 13 to Fig. 16 The display device according to implementations of the present disclosure can be included in various electronic devices. For example, various electronic devices can be a portable device 1100, as described in Fig. 13 shown, a mobile device 1200, as in Fig. 14 shown, a 1300 laptop, as in Fig. 15 shown, or a monitor or television 1400, as in Fig. 16 shown, but implementations of the present disclosure are not limited to that.

[0477] Each of the portable device 1100, the mobile device 1200, the laptop 1300 and the monitor or television 1400 can have a housing part 1005, 1010, 1015 and 1020 and a display panel 100 and a display device 1000 according to implementations of the present disclosure described above.

[0478] For example, according to one implementation of the present disclosure, the display device can be used in a mobile device, a video phone, a smartwatch, a watch phone, a portable device, a foldable device, a rollable device, a bendable device, a flexible device, a curved device, a sliding device, a variable device, an electronic notebook, an e-book, a portable multimedia player (PMP), a PDA (personal digital assistant), an MP3 player, a mobile medical device, a desktop personal computer (PC), a laptop PC, a netbook computer, a workstation, a navigation device, a vehicle display, a theater display, a television, a wallpaper device, a signage device, a gaming device, a laptop, a gaming device, a monitor, a camera,can be applied to a camcorder or a household appliance.

[0479] The features of the display device according to an implementation of the present disclosure are briefly summarized as follows.

[0480] A display device according to an implementation of the present disclosure comprises a substrate having a display area and a non-display area, a pixel driver circuit provided in the display area, first electrodes connected to the pixel driver circuit, light emission devices provided on the first electrodes, and second electrodes provided on the light emission devices, wherein the pixel driver circuit comprises: a sensing part configured to provide a cathode voltage or a touch activation signal to the second electrodes; and a sensing switch configured to transfer energy from a power part to the sensing part in response to a touch activation signal, or to block energy being transferred from the power part.

[0481] At least two secondary electrodes connected to the pixel driver circuit are used as a touch electrode.

[0482] Each of the at least two second electrodes extends along a first direction of the substrate, and the at least two second electrodes are provided along a second direction that differs from the first direction.

[0483] When a cathode voltage is supplied to any one of the at least two second electrodes, light is emitted from light-emitting devices connected to the second electrode to which the cathode voltage is supplied.

[0484] If the at least two second electrodes are used as a single touch electrode, a touch driver signal is provided simultaneously to the at least two second electrodes.

[0485] The pixel driver circuit further includes a control switch section configured to provide a cathode voltage to the second electrodes during a display period and to connect the sensing section to the second electrodes during a touch sensing period.

[0486] The pixel driver circuit further includes a subpixel driver section configured to provide anode voltages to the first electrodes.

[0487] A display device according to an implementation of the present disclosure further comprises a display driver configured to transmit a touch activation signal to the detection switch.

[0488] The display driver transmits a touch activation pulse, which forms the touch activation signal, to the sensing switch when a touch signal indicating a touch sensing period is received under a touch synchronization signal, and the touch synchronization signal distinguishes a touch sensing period from a display period.

[0489] When the touch activation pulse is received, the sensing switch connects the power supply to the sensing unit.

[0490] The sensing unit is controlled by energy provided by the power unit and provides the touch driver signal to the second electrodes.

[0491] If the touch activation pulse is not received, the detection switch disconnects the power section from the detection section.

[0492] The width of the touch activation pulse is less than or equal to the width of the touch signal.

[0493] When the touch signal is received, the display driver sequentially transmits a first activation pulse and a second activation pulse to the detection switch.

[0494] When the first activation pulse is received, the sensing unit provides a touch driver signal to the second electrodes, converts an analog touch sensing signal received from the second electrodes into a digital touch sensing signal and transmits the digital touch sensing signal to the display driver, and, when the second activation pulse is received, the sensing unit provides a touch driver signal to the second electrodes or converts an analog touch sensing signal received from the second electrodes into a digital touch sensing signal and transmits the digital touch sensing signal to the display driver.

[0495] The touch detection period has a normal touch detection period, which continues after it is determined that a touch is present, and a wake-up touch detection period, which continues after it is determined that a touch is not present, and the display driver transmits the touch activation pulse to the detection switch during each of the normal touch detection period and the wake-up touch detection period.

[0496] According to the present disclosure, energy supplied to the sensing element configured to output the touch driver signal can be blocked during a period in which the touch driver signal is not output to the touch electrode during the touch sensing period. Accordingly, the energy consumption of the display device can be reduced.

[0497] Accordingly, according to the present disclosure, a display device with low energy characteristics can be provided, and accordingly, a display device capable of implementing an Environment / Social / Governance (ESG) can be provided.

Claims

[1] A display device (1000), comprising: a substrate (110) having a display area (AA) and a non-display area (NA); a pixel driver circuit (PD) that is provided in the display area (AA); one or more first electrodes (CE1) connected to the pixel driver circuit (PD); one or more light emission devices (EDs) provided on the one or more first electrodes (CE1); and a plurality of second electrodes (CE2) provided on one or more light emission devices (EDs), the pixel driver circuit (PD) features: a sensing circuit configured to provide a cathode voltage or touch driver signal (TDS) to the majority of second electrodes (CE2); and a detection switch (430) configured to transfer energy from a power circuit (500) to the detection circuit in response to a touch activation signal (Touch_EN) or to block energy transferred from the power circuit (500). [2] The display device (1000) according to claim 1, wherein the display device (1000) is configured to use at least two second electrodes (CE2) among the plurality of second electrodes (CE2) connected to the pixel driver circuit (PD) as a touch electrode (TE). [3] The display device (1000) according to claim 2, wherein each of the at least two second electrodes (CE2) extends along a first direction (X) of the substrate (110), and the at least two second electrodes (CE2) are provided along a second direction (Y) of the substrate (110) which differs from the first direction (X) of the substrate (110). [4] The display device (1000) according to claim 3, wherein for each second electrode (CE2) of the at least two second electrodes (CE2) the display device (1000) is configured to emit light from the one or more light emission devices (ED) connected to the second electrode (CE2) when a cathode voltage is supplied to the second electrodes (CE2). [5] The display device (1000) according to claim 3 or 4, wherein the display device (1000) is configured to simultaneously provide a touch driver signal (TDS) to the at least two second electrodes (CE2) when the display device (1000) uses the at least two second electrodes (CE2) as a touch electrode (TE). [6] The display device (1000) according to any one of claims 1 to 5, wherein the pixel driver circuit (PD) further comprises a control switch part (410) configured to provide the cathode voltage to the plurality of second electrodes (CE2) during a display period (DP) and to connect the sensing circuit to the plurality of second electrodes (CE2) during a touch sensing period (TP). [7] The display device (1000) according to any one of claims 1 to 6, wherein the pixel driver circuit (PD) further comprises a subpixel driver part (450) configured to provide anode voltages to one or more first electrodes (CE1). [8] The display device (1000) according to any one of claims 1 to 7, further comprising a display driver (200) configured to transmit the touch activation signal (Touch_EN) to the detection switch (430). [9] The display device (1000) according to claim 8, wherein the display driver (200) is configured to transmit a touch activation pulse (E1) forming the touch activation signal (Touch_EN) to the sensing switch (430) when the display driver (200) receives a touch synchronization signal (Tsync) which includes a touch signal (S1) indicating a touch sensing period (TP), and the touch synchronization signal (Tsync) distinguishes the touch sensing period (TP) from a display period (DP). [10] The display device (1000) according to claim 9, wherein the detection switch (430) is configured to connect the power circuit (500) to the detection circuit when the detection switch (430) receives the touch activation pulse (E1). [11] The display device (1000) according to claim 10, wherein the sensing circuit is configured to be driven by energy provided by the power circuit (500) and to provide the touch driver signal (TDS) to the plurality of second electrodes (CE2). [12] The display device (1000) according to claim 10 or 11, wherein the detection switch (430) is configured to disconnect the power circuit (500) from the detection circuit when the detection switch (430) does not receive the touch activation pulse (E1). [13] The display device (1000) according to any one of claims 9 to 12, wherein a width of the touch activation pulse (E1) is less than or equal to a width of the touch signal (S1). [14] The display device (1000) according to any one of claims 9 to 13, wherein the display driver (200) is configured to sequentially transmit a first activation pulse (E1) and a second activation pulse (E2) to the detection switch (430) when the display driver (200) receives the touch synchronization signal (Tsync) which includes the touch signal (S1) indicating the touch detection period (TP). [15] The display device (1000) according to claim 14, wherein: the sensing circuit is configured to provide the touch driver signal (TDS) to the plurality of second electrodes (CE2) in response to receiving the first activation pulse (E1), to convert an analog touch sensing signal received by the plurality of second electrodes (CE2) into a digital touch sensing signal, and to transmit the digital touch sensing signal to the display driver (200), and the sensing circuit is configured to (i) provide the touch driver signal (TDS) to the plurality of second electrodes (CE2) in response to receiving the second activation pulse (E2), or (ii) convert an analog touch sensing signal received by the plurality of second electrodes (CE2) into a digital touch sensing signal and transmit the digital touch sensing signal to the display driver (200). [16] The display device (1000) according to any one of claims 9 to 15, wherein the touch detection period (TP) comprises a normal touch detection period, which continues after it is determined that a touch is present, and a wake-up touch detection period, which continues after it is determined that a touch is not present, and the display driver (200) is configured to transmit the touch activation pulse (E1) to the detection switch (430) during each of the normal touch detection period and the wake-up touch detection period.

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