Color filter substrate and display device

Abstract

Embodiments of the present disclosure relate to a color filter substrate and a display device, and more particularly, may provide a color filter substrate and a display device, and a color filter layer for realizing an infrared filter that selectively transmits infrared light by having a color pattern stack by stacking color patterns having the same or substantially the same configuration as the color filter layer.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a color filter substrate and a display device. Background Art

[0002] The development of smart society has led to an increase in demand for various types of display devices. Representative examples of such display devices include liquid crystal devices (LCDs) and organic light emitting display devices (OLEDs).

[0003] In recent years, as the functions of display devices have become more diversified, optical sensors such as iris recognition sensors or proximity sensors and camera devices for taking photos and videos have appeared in the display devices.

[0004] The display device may use an optical sensor to recognize the user's iris and determine whether the display device is activated by comparing the recognized iris with a stored value. In addition, the display device may use an optical sensor to detect changes in the amount of light around the display device and adjust the brightness of the display device or deactivate the display device based on the detected changes. Summary of the invention

[0005] Embodiments of the present disclosure may provide a color filter substrate and a display device for implementing an infrared filter that selectively transmits infrared light by stacking a color pattern having a color pattern having the same or substantially the same configuration as a color filter layer.

[0006] Embodiments of the present disclosure may provide a color filter substrate and a display device for implementing an infrared filter that reduces external visibility by providing a color pattern stack by stacking color patterns having the same or substantially the same configuration as a color filter layer without additional infrared ink.

[0007] Embodiments of the present disclosure may provide a color filter substrate and a display device for achieving process optimization with a simplified manufacturing process by forming a color pattern stack by simultaneously stacking a color pattern having the same or substantially the same configuration as a color filter layer.

[0008] Embodiments of the present disclosure may provide a color filter substrate and a display device for realizing a single-material product by forming a color pattern stack by simultaneously stacking a color pattern having the same or substantially the same configuration as a color filter layer.

[0009] In one embodiment, a color filter substrate includes: a substrate; a color filter layer, which is on the substrate and includes a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, and the color filter layer is configured to be positioned in areas corresponding to multiple sub-pixels, respectively; a color pattern stack, which is configured to be disposed above a sensor area, the color pattern stack including a first color pattern and a second color pattern on the first color pattern and having a different color from the first color pattern; and a planarization layer, which is on the color filter layer and the color pattern stack.

[0010] In one embodiment, a display device includes: a first substrate including a plurality of sub-pixels and a sensor area; a color filter layer including a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, and the color filter layer overlaps with the plurality of sub-pixels; a color pattern stack overlapping with the sensor area, the color pattern stack including a first color pattern and a second color pattern on the first color pattern and having a different color from the first color pattern; a planarization layer on the color filter layer and the color pattern stack; a second substrate on the planarization layer; and a sensor module overlapping with the sensor area.

[0011] In one embodiment, a display device includes: a substrate including a first region and a second region spaced apart from the first region; a plurality of sub-pixels in the first region but not in the second region; a color filter overlapping the plurality of sub-pixels in the first region; and a color pattern stack overlapping the second region, the color pattern stack including a first color pattern having a first color and a second color pattern on the first color pattern and having a second color different from the first color.

[0012] According to an embodiment of the present disclosure, a color filter substrate and a display device may be provided for implementing an infrared filter that selectively transmits infrared light by having a color pattern stack by stacking color patterns having the same or substantially the same configuration as a color filter layer.

[0013] According to an embodiment of the present disclosure, a color filter substrate and a display device can be provided for realizing an infrared filter that reduces external visibility without additional infrared ink by providing a color pattern stack by stacking a color pattern having the same or substantially the same configuration as a color filter layer.

[0014] According to an embodiment of the present disclosure, a color filter substrate and a display device may be provided for achieving process optimization with a simplified manufacturing process by forming a color pattern stack by simultaneously stacking a color pattern having the same or substantially the same configuration as a color filter layer.

[0015] According to an embodiment of the present disclosure, a color filter substrate and a display device for realizing a single-material product by forming a color pattern stack by simultaneously stacking a color pattern having the same or substantially the same configuration as a color filter layer may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other benefits, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a view illustrating a system configuration of a display device according to an embodiment of the present disclosure;

[0018] Figure 2 is an equivalent circuit diagram illustrating a sub-pixel in a display panel according to an embodiment of the present disclosure;

[0019] Figure 3 is an equivalent circuit diagram illustrating a sub-pixel having a dual-gate driving structure in a display panel according to an embodiment of the present disclosure;

[0020] Figure 4 is another equivalent circuit diagram illustrating a sub-pixel in a display panel according to an embodiment of the present disclosure;

[0021] Figure 5 is a view illustrating a color filter substrate according to an embodiment of the present disclosure;

[0022] Figure 6 is a view illustrating a sensor area in a color filter substrate according to an embodiment of the present disclosure;

[0023] Figure 7 is a graph illustrating light transmittance according to a color filter in a color filter substrate according to an embodiment of the present disclosure;

[0024] Figure 8 and Fig. 9 is a view illustrating a color filter substrate according to an embodiment of the present disclosure;

[0025] Fig.10 , Fig.11 , Fig.12 and Fig.13 is a view illustrating a display device according to an embodiment of the present disclosure; and

[0026] Fig.142 is a view illustrating a camera area and a sensor area in a display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] In the following description of examples or embodiments of the present disclosure, reference will be made to the accompanying drawings, in which specific examples or embodiments that can be implemented are shown by way of example, and in which the same reference numerals and symbols may be used to represent the same or similar components even if they are shown in different drawings. In addition, in the following description of examples or embodiments of the present disclosure, when it is determined that a detailed description of the well-known functions and components incorporated herein may make the subject matter of some embodiments of the present disclosure unclear, the description will be omitted or briefly provided. Terms such as "including", "having", "comprising", "consisting of", "consisting of", and "formed of" used herein are generally intended to allow the addition of other components unless these terms are used together with the term "only". When used in this article, the singular form is intended to include the plural form unless the context clearly indicates otherwise.

[0028] Terms such as "first", "second", "A", "B", "(A)" or "(B)" may be used herein to describe elements of the present disclosure. Each of these terms is not used to limit the nature, order, sequence or quantity of the elements, etc., but is only used to distinguish the corresponding elements from other elements.

[0029] When it is mentioned that a first element is "connected or coupled to" a second element, "contacts or overlaps" the second element, etc., it is generally interpreted that the first element can not only be "directly connected or coupled to" the second element or "directly contact or overlaps" the second element, but also a third element can be "interposed" between the first element and the second element, or the first element and the second element can be "connected or coupled to", "contacts or overlaps" each other via a fourth element, etc. Here, the second element can be included in at least one element of the two or more elements that are "connected or coupled to", "contacts or overlaps", etc., each other.

[0030] When time relative terms such as "after", "subsequently", "next", "before" and the like are used to describe a process or operation of an element or configuration, or a flow or step in an operation, process, or manufacturing method, unless used together with the terms "directly" or "immediately following", these terms may be used to describe non-continuous or non-sequential processes or operations.

[0031] In addition, when any dimension, relative size, etc. is mentioned, it can be considered that the numerical value or corresponding information (e.g., level, range, etc.) of the element or feature includes a tolerance or error range that may be caused by various factors (e.g., process factors, internal influence or external influence, noise, etc.), even when no relevant description is specified. In addition, the term "may" fully encompasses all meanings of the term "can".

[0032] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0033] Figure 1 is a view illustrating a system configuration of a display device 100 according to an embodiment of the present disclosure.

[0034] Reference Figure 1 The display device 100 according to an embodiment of the present disclosure may include a display panel 110 including a plurality of sub-pixels SP, and a driving circuit for driving the plurality of sub-pixels SP included in the display panel 110 .

[0035] The driving circuit may include a data driving circuit 120 and a gate driving circuit 130. The display device 100 may further include a controller 140 that controls the data driving circuit 120 and the gate driving circuit 130.

[0036] The display panel 110 may include a substrate SUB and signal lines such as a plurality of data lines DL and a plurality of gate lines GL disposed on the substrate SUB. The plurality of data lines DL and the plurality of gate lines GL may be connected to a plurality of sub-pixels SP.

[0037] The display panel 110 may include a display area DA (e.g., a first area) in which an image is displayed and a non-display area NDA (e.g., a second area spaced apart from the first area) in which no image is displayed. In the display panel 110, a plurality of sub-pixels SP for displaying an image may be disposed in the display area DA, and the driving circuits 120, 130 and the controller 140 may be electrically connected to the non-display area NDA or disposed in the non-display area NDA. In addition, a pad unit for connecting an integrated circuit or a printed circuit may be disposed in the non-display area NA.

[0038] The data driving circuit 120 is a circuit for driving the plurality of data lines DL, and may supply data signals to the plurality of data lines DL.

[0039] The gate driving circuit 130 is a circuit for driving the plurality of gate lines GL, and may provide a gate signal to the plurality of gate lines GL.

[0040] The controller 140 may supply a data control signal DCS to the data driving circuit 120 to control the operation timing of the data driving circuit 120 , and may supply a gate control signal GCS to the gate driving circuit 130 to control the operation timing of the gate driving circuit 130 .

[0041] The controller 140 can start scanning according to the timing implemented in each frame, convert the input image data input from the outside into image data Data in a data signal format suitable for use in the data driving circuit 120, supply the image data Data to the data driving circuit 120, and control the data drive at an appropriate time suitable for scanning.

[0042] The controller 140 receives various timing signals including a vertical synchronization signal VSYNC, a horizontal synchronization signal HSYNC, an input data enable signal DE, and a clock signal, and input image data from the outside (eg, the host system 150 ).

[0043] In order to control the data driving circuit 120 and the gate driving circuit 130, the controller 140 receives timing signals such as a vertical synchronization signal VSYNC, a horizontal synchronization signal HSYNC, an input data enable signal DE, and a clock signal CLK, generates various control signals DCS and GCS, and outputs the control signals to the data driving circuit 120 and the gate driving circuit 130.

[0044] For example, in order to control the gate driving circuit 130, the controller 140 outputs various gate control signals GCS including a gate start pulse GSP, a gate shift clock GSC, and a gate output enable signal (Gate Output Enable, GOE).

[0045] In order to control the data driving circuit 120 , the controller 140 outputs various data control signals DCS including, for example, a source start pulse SSP, a source sampling clock SSC, and a source output enable signal (Source Output Enable, SOE).

[0046] The controller 140 may be implemented as a separate component from the data driving circuit 120 , or the controller 140 may be implemented together with the data driving circuit 120 as an integrated circuit.

[0047] The data driving circuit 120 receives the image data Data from the controller 140 and supplies data voltages to the plurality of data lines DL, thereby driving the plurality of data lines DL. The data driving circuit 120 is also referred to as a “source driving circuit”.

[0048] The data driving circuit 120 may include one or more source driver integrated circuits SDIC.

[0049] Each source driver integrated circuit (SDIC) may include a shift register, a latch circuit, a digital-to-analog converter (DAC), and an output buffer. In some cases, each source driver integrated circuit (SDIC) may also include an analog-to-digital converter ADC.

[0050] For example, each source driver integrated circuit (SDIC) can be connected to the display panel 110 through a tape automated bonding (TAB) method, or connected to a bonding pad of the display panel 110 through a chip on glass (COG) or chip on board (COP) method, or can be implemented through a chip on film (COF) method and connected to the display panel 110.

[0051] The gate driving circuit 130 may output a gate signal of an on-level voltage or a gate signal of an off-level voltage according to the control of the controller 140. The gate driving circuit 130 may sequentially drive the plurality of gate lines GL by sequentially supplying the gate signal of an on-level voltage to the plurality of gate lines GL.

[0052] The gate drive circuit 130 may be connected to the display panel 110 by a TAB method, or connected to a bonding pad of the display panel 110 by a COG or COP method, or may be connected to the display panel 110 according to a COF method. Alternatively, the gate drive circuit 130 may be formed in a non-display area NDA of the display panel 110 in a panel gate (GIP) type. The gate drive circuit 130 may be disposed on a substrate SUB or may be connected to the substrate SUB. In other words, the gate drive circuit 130 of the GIP type may be disposed in the non-display area NDA of the substrate SUB. The gate drive circuit 130 of the chip on glass (COG) type or the chip on film (COF) type may be connected to the substrate SUB.

[0053] In addition, at least one of the data driving circuit 120 and the gate driving circuit 130 may be disposed in the display area DA. For example, at least one of the data driving circuit 120 and the gate driving circuit 130 may be disposed not to overlap with the subpixels SP or to overlap with all or some of the subpixels SP.

[0054] When the selected gate line GL is driven by the gate driving circuit 130 , the data driving circuit 120 may convert the image data Data received from the controller 140 into an analog data voltage and supply it to the plurality of data lines DL.

[0055] The data driving circuit 120 may be connected to one side (e.g., the upper side or the lower side) of the display panel 110. Depending on a driving scheme or a panel design scheme, the data driving circuit 120 may be connected to both sides (e.g., the upper side and the lower side) of the display panel 110, or to two or more of the four sides of the display panel 110.

[0056] The gate driving circuit 130 may be connected to one side (e.g., the left side or the right side) of the display panel 110. Depending on the gate driving scheme and the panel design scheme, the gate driving circuit 130 may be connected to both sides (e.g., the left side and the right side) of the display panel 110, or to two or more sides of the four sides of the display panel 110.

[0057] The controller 140 may be a timing controller used in general display technology, may be a control device that can perform other control functions as well as the function of the timing controller, or may be a control device other than the timing controller, or the controller 140 may also be a circuit in the control device. The controller 140 may be implemented as various circuits or electronic components such as an integrated circuit (IC), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a processor.

[0058] The controller 140 may be mounted on a printed circuit board or a flexible printed circuit, and may be electrically connected to the data driving circuit 120 and the gate driving circuit 130 through the printed circuit board or the flexible printed circuit.

[0059] The controller 140 may send or receive signals to or from the data driving circuit 120 according to one or more predetermined interfaces. The interfaces may include, for example, a low voltage differential signaling (LVDS) interface, an embedded clock point-to-point interface (EPI), and a serial peripheral interface (SPI).

[0060] The controller 140 may include a storage medium such as one or more registers.

[0061] Reference Figure 1 According to an embodiment of the present disclosure, the display device 100 may include one or more optical electronic devices. The one or more optical electronic devices may be devices that receive light transmitted through the display panel and perform a predetermined function according to the received light. For example, the one or more optical electronic devices may include one or more of a shooting device such as a camera (image sensor), a proximity sensor, an illumination sensor, and an object or human recognition sensor.

[0062] Reference Figure 1 , the display device 100 according to an embodiment of the present disclosure may include a camera area 160 and a sensor area 170. The camera area 160 may be an area overlapping with the photographing device, and the sensor area 170 may be an area overlapping with the sensor device.

[0063] Reference Figure 1, the camera area 160 and the sensor area 170 may be set in the non-display area NDA, but are not limited thereto. For example, the camera area 160 and the sensor area 170 may be set in the display area DA. In addition, the camera area 160 may be set in the display area DA and the sensor area 170 may be set in the non-display area NDA, or the camera area 160 may be set in the non-display area NDA and the sensor area 170 may be set in the display area DA.

[0064] The display device 100 according to the present embodiment may be a display including a backlight unit such as a liquid crystal display, or may be a self-luminous display such as an organic light emitting display device, a quantum dot display device, or an inorganic light emitting display device.

[0065] When the display device 100 according to the present embodiment is an organic light emitting display device, each sub-pixel SP may include a self-luminous organic light emitting diode (OLED) as a light emitting element.

[0066] If the display device 100 according to the present embodiment is a quantum dot display device, each sub-pixel SP may include a light emitting element formed of a quantum dot, which is a self-luminous semiconductor crystal.

[0067] If the display device 100 according to the present embodiment is an inorganic light emitting display device, each sub-pixel SP may include an inorganic light emitting element (which is self-luminous and formed of an inorganic material) as a light emitting element. For example, the inorganic light emitting element is also called a micro light emitting diode (LED), and the inorganic light emitting display device is also called a micro LED display device.

[0068] Figure 2 is an equivalent circuit diagram illustrating a sub-pixel SP in the display panel 110 according to an embodiment of the present disclosure.

[0069] Reference Figure 2 , each of the plurality of sub-pixels SP disposed on the display panel 110 according to an embodiment of the present disclosure may include a light emitting element ED and a sub-pixel circuit SPC for driving the light emitting element ED.

[0070] The sub-pixel circuit SPC of each sub-pixel SP may include a driving transistor DRT, a scanning transistor SCT, a sensing transistor SENT, and a storage capacitor Cst. In this case, since the sub-pixel circuit SPC of each sub-pixel SP includes three transistors DRT, SCT, and SENT and one capacitor Cst, it can be referred to as having a 3T (transistor) 1C (capacitor) structure.

[0071] Reference Figure 2The light emitting element ED may include an anode electrode AND and a cathode electrode CAT, and may include a light emitting layer EL located between the anode electrode AND and the cathode electrode CAT.

[0072] One of the anode electrode AND and the cathode electrode CAT may be a pixel electrode connected to a transistor such as a driving transistor DRT, and the other may be a common electrode to which a common voltage is applied. Here, the pixel electrode is an electrode provided in each sub-pixel SP, and the common electrode is an electrode provided in common in all sub-pixels SP. For example, the common voltage may be a high potential voltage EVDD as a high-level common voltage or a low potential voltage EVSS as a low-level common voltage. Here, the high potential voltage EVDD is also referred to as a driving voltage, and the low potential voltage EVSS is also referred to as a base voltage.

[0073] according to Figure 2 In the example shown, the anode electrode AND may be a pixel electrode connected to a transistor such as a driving transistor DRT, and the cathode electrode CAT may be a common electrode to which a low potential voltage EVSS is applied.

[0074] For example, the light emitting element ED may be an organic light emitting diode OLED, an inorganic material-based light emitting diode LED, or a quantum dot light emitting element.

[0075] Reference Figure 2 The driving transistor DRT is a transistor for driving the light emitting element ED and may include a first node N1, a second node N2, and a third node N3.

[0076] The first node N1 of the driving transistor DRT may be a gate node of the driving transistor DRT and may be electrically connected to a source node or a drain node of the scanning transistor SCT. The second node N2 of the driving transistor DRT may be a source node or a drain node of the driving transistor DRT and may be electrically connected to a source node or a drain node of the sensing transistor SENT and may also be electrically connected to an anode electrode AND of the light emitting element ED. The third node N3 of the driving transistor DRT may be electrically connected to a high potential voltage line DVL supplying a high potential voltage EVDD.

[0077] Reference Figure 2 , the scanning transistor SCT may be controlled by a scanning signal SC as a kind of gate signal, and may be connected between the first node N1 of the driving transistor DRT and the data line DL. In other words, the scanning transistor SCT may be turned on or off according to the scanning signal SC supplied from the scanning signal line SCL as a kind of gate line GL, and control the connection between the data line DL and the first node N1 of the driving transistor DRT.

[0078] The scan transistor SCT may be turned on by the scan signal SC having an on-level voltage and transfer the data voltage Vdata supplied from the data line DL to the first node N1 of the driving transistor DRT.

[0079] If the scanning transistor SCT is an n-type transistor, the on-level voltage of the scanning signal SC may be a high-level voltage. If the scanning transistor SCT is a p-type transistor, the on-level voltage of the scanning signal SC may be a low-level voltage. In the following, the scanning transistor SCT is an n-type transistor as an example. Accordingly, the on-level voltage is a high-level voltage as an example.

[0080] Reference Figure 2 , the sensing transistor SENT may be controlled by a sensing signal SE as a kind of gate signal, and may be connected between the second node N2 of the driving transistor DRT and the reference voltage line RVL. In other words, the sensing transistor SENT may be turned on or off according to the sensing signal SE supplied from the sensing signal line SENL as another kind of gate line GL, and control the connection between the reference voltage line RVL and the second node N2 of the driving transistor DRT.

[0081] The sensing transistor SENT may be turned on by a sensing signal SE having an on-level voltage and transmit a reference voltage Vref supplied from a reference voltage line RVL to a second node N2 of the driving transistor DRT. Here, the sensing signal SE may be regarded as a second scan signal different from the scan signal SC.

[0082] The sensing transistor SENT may be turned on by the sensing signal SE having the on-level voltage, and transmit the voltage of the second node N2 of the driving transistor DRT to the reference voltage line RVL.

[0083] If the sensing transistor SENT is an n-type transistor, the on-level voltage of the sensing signal SE may be a high-level voltage. If the sensing transistor SENT is a p-type transistor, the on-level voltage of the sensing signal SE may be a low-level voltage. In the following, the sensing transistor SENT is an n-type transistor as an example. Accordingly, the on-level voltage is a high-level voltage as an example.

[0084] The function in which the sensing transistor SENT transmits the voltage of the second node N2 of the driving transistor DRT to the reference voltage line RVL can be used when driving to sense the characteristic value of the sub-pixel SP. In this case, the voltage transmitted to the reference voltage line RVL can be a voltage for calculating the characteristic value of the sub-pixel SP or a voltage reflecting the characteristic value of the sub-pixel SP.

[0085] In the present disclosure, the characteristic value of the subpixel SP may be a characteristic value of the driving transistor DRT or the light emitting element ED. For example, the characteristic value of the driving transistor DRT may include a threshold voltage and mobility of the driving transistor DRT. The characteristic value of the light emitting element ED may include a threshold voltage of the light emitting element ED.

[0086] Reference Figure 2 , the storage capacitor Cst may be connected between the first node N1 and the second node N2 of the driving transistor DRT. The storage capacitor Cst may be charged with an amount of charge corresponding to the voltage difference between its two ends, and may be used to maintain the voltage difference between the two ends during a predetermined frame time. Therefore, during the predetermined frame time, the corresponding sub-pixel SP may emit light.

[0087] Reference Figure 2 , each of the driving transistor DRT, the scanning transistor SCT, and the sensing transistor SENT may be an n-type transistor or a p-type transistor. In the present disclosure, for ease of description, each of the driving transistor DRT, the scanning transistor SCT, and the sensing transistor SENT is an n-type transistor.

[0088] The storage capacitor Cst is not a parasitic capacitor (eg, Cgs or Cgd) that is an internal capacitor existing between the gate node and the source node (or drain node) of the driving transistor DRT, but may be an external capacitor intentionally designed outside the driving transistor DRT.

[0089] Figure 2 The sub-pixel SP illustrated in FIG. 1 is merely an example, and various changes may be made thereto (eg, such as further including one or more transistors or one or more capacitors).

[0090] Figure 3 is an equivalent circuit diagram illustrating a sub-pixel SP having a dual gate driving structure in the display panel 110 according to an embodiment of the present disclosure.

[0091] Figure 3 The sub-pixel circuit SPC of the sub-pixel SP has Figure 2 The 3T1C structure is the same as the 3T1C structure. Figure 3 The sub-pixel SP may have a dual gate driving structure.

[0092] like Figure 3 As shown, when the sub-pixel SP has a dual gate driving structure, the sub-pixel SP may be connected to two gate lines GL including a scan signal line SCL and a sense signal line SENL.

[0093] Reference Figure 3In the sub-pixel circuit SPC of the sub-pixel SP having the dual-gating driving structure, the gate node of the scanning transistor SCT can be connected to the scanning signal line SCL, and the gate node of the sensing transistor SENT can be connected to the sensing signal line SENL. Therefore, the scanning transistor SCT and the sensing transistor SENT can operate independently of each other.

[0094] Reference Figure 3 , the sub-pixel circuit SPC of the sub-pixel SP having the dual-gating driving structure can receive the scanning signal SC through the scanning signal line SCL, and receive the sensing signal SE through the sensing signal line SENL. In the sub-pixel circuit SPC of the sub-pixel SP having the dual-gating driving structure, the gate node of the scanning transistor SCT can receive the scanning signal SC through the scanning signal line SCL, and the gate node of the sensing transistor SENT can receive the sensing signal SE through the sensing signal line SENL.

[0095] Reference Figure 3 , when the sub-pixel SP has a dual-gating driving structure, the on-off timing of the scanning transistor SCT in one sub-pixel SP and the on-off timing of the sensing transistor SENT may be independent. In other words, when the sub-pixel SP has a dual-gating driving structure, the on-off timing of the scanning transistor SCT in one sub-pixel SP and the on-off timing of the sensing transistor SENT may be different or the same.

[0096] Figure 4 is another equivalent circuit diagram illustrating a sub-pixel SP in the display panel 110 according to an embodiment of the present disclosure.

[0097] Reference Figure 4 The sub-pixel SP may include a light emitting element ED and a sub-pixel circuit SPC for driving the light emitting element ED. The sub-pixel circuit SPC may include an additional control circuit ACC in addition to a driving transistor DRT, a scanning transistor SCT, a sensing transistor SENT, and a storage capacitor Cst.

[0098] The additional control circuit ACC may comprise one or more transistors and / or one or more capacitors.

[0099] The additional control circuit ACC may include: a fourth node N4, which is electrically connected to the source node or the drain node of the scanning transistor SCT; a fifth node N5, which is electrically connected to the anode electrode AND of the light emitting element ED; a sixth node N6, which is electrically connected to the source node or the drain node of the sensing transistor SENT; and a seventh node N7, which is electrically connected to the high potential voltage line DVL.

[0100] If necessary, an additional voltage may be supplied to the additional control circuit ACC.

[0101] Reference Figure 4 , when the fourth node N4 is electrically connected to the first node N1, the fifth node N5 and the sixth node N6 are electrically connected to the second node N2, and the seventh node N7 is electrically connected to the third node N3 through the additional control circuit ACC, Figure 4 The sub-pixel SP can be Figure 2 The sub-pixels SP are identical or substantially identical.

[0102] For example, the additional control circuit ACC may include a light emission control transistor controlling a connection between the second node N2 and the fifth node N5. As another example, the additional control circuit ACC may include a light emission control transistor controlling a connection between the seventh node N7 and the third node N3.

[0103] Figure 5 is a view illustrating a color filter substrate 200 according to an embodiment of the present disclosure. For example, Figure 5 is an example of Figure 1 FIG. 1 is a cross-sectional view of the color filter substrate 200 taken along line II′.

[0104] Reference Figure 5 , the color filter substrate 200 according to an embodiment of the present disclosure includes a substrate 210 , a color filter layer 220 , a color pattern stack 230 , and a planarization layer 250 .

[0105] The substrate 210 may be a transparent substrate. The transparent substrate may be formed of glass or a transparent plastic such as polyimide, but is not limited thereto. The substrate 210 may be disposed on the light exit portion of the display device 100 to reduce or prevent the penetration of oxygen or moisture from the external environment, and may transmit light implemented in the color filter layer 220.

[0106] Reference Figure 5 , the substrate 210 may include a plurality of sub-pixels SP and a sensor region 170 .

[0107] The plurality of subpixels SP may include a first subpixel SP1, a second subpixel SP2, and a third subpixel SP3. The first subpixel SP1 may emit light of a first color, the second subpixel SP2 may emit light of a second color, and the third subpixel SP3 may emit light of a third color, but the present disclosure is not limited thereto.

[0108] For example, the first subpixel SP1 may be a red (R) subpixel that emits red (R) light (which is light of the first color), the second subpixel SP2 may be a blue (B) subpixel that emits blue (B) light (which is light of the second color), and the third subpixel SP3 may be a green (G) subpixel that emits green (G) light (which is light of the third color).

[0109] Reference Figure 5 , the color filter layer 220 may include a plurality of color filters on the substrate 210. The color filters include first, second, and third color filters 221, 223, and 225 of different colors located in respective regions corresponding to the plurality of sub-pixels SP.

[0110] At least two of the first color filter 221, the second color filter 223, and the third color filter 225 may have different thicknesses. For example, one color filter may have a thickness thicker than the other two color filters, and the other two color filters may have the same or substantially the same thickness. In addition, all three color filters may have different thicknesses.

[0111] The first color filter 221 may be a red (R) color filter having a first color, the second color filter 223 may be a blue (B) color filter having a second color, and the third color filter 225 may be a green (G) color filter having a third color. In other words, the red (R) color filter, the blue (B) color filter, and the green (G) color filter may be formed using a red (R) resin, a blue (B) resin, and a green (G) resin, respectively.

[0112] In addition, although Figure 5 Although not illustrated in the figure, the color filter layer 220 may also include a transparent area in which no color filter is disposed. That is, the transparent area lacks any color filter. A transparent planarization layer 250 may be disposed in the transparent area without using an additional color resin.

[0113] The transparent area can be used as a white (W) sub-pixel emitting white (W) light or a transmission area through which external light passes. For example, when a white light-emitting element is provided in the transparent area, the transparent area can be used as a white (W) sub-pixel. In addition, when no light-emitting element is provided in the transparent area, the transparent area can be used as a transmission area through which external light passes and can be used in a transparent display device.

[0114] Reference Figure 5 , a black matrix 240 defining an opening area exposing each of the plurality of sub-pixels SP may be located on the substrate 210 .

[0115] Each of the first sub-pixel SP1 , the second sub-pixel SP2 , and the third sub-pixel SP3 may be provided with a black matrix 240 located between the respective sub-pixel regions, and the respective sub-pixel regions may be divided by the black matrix 240 .

[0116] In other words, the black matrix 240 may allow light emitted from the light emitting element to be emitted only from each of the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3. Therefore, the black matrix 240 may reduce or prevent color mixing at the boundary of each subpixel region.

[0117] Reference Figure 5 , a color pattern stack 230 corresponding to the sensor region 170 may be disposed on the substrate 210. That is, the color pattern stack 230 is in the sensor region 170. The color pattern stack 230 may be disposed on the same layer as the color filter layer 220.

[0118] The color pattern stack 230 may be configured by stacking color patterns having different colors, thereby serving as an infrared filter that selectively transmits infrared light by reducing the transmittance of visible light and increasing the transmittance of infrared light.

[0119] The color pattern stack 230 may have a thickness of 1 μm to 5 μm. In other words, the total thickness of the color pattern stack 230 may be 1 μm to 5 μm. If the color pattern stack 230 has a thickness less than 1 μm, the transmittance of visible light may be relatively high, and if the color pattern stack 230 has a thickness greater than 5 μm, the transmittance of visible light may be effectively reduced, but the thickness of the color filter substrate 200 including the color pattern stack 230 may increase.

[0120] Reference Figure 5 , the color pattern stack 230 may be configured by stacking first color patterns 231 and second color patterns 233 having different colors. For example, the color pattern stack 230 may have a stacked structure in which the first color pattern 231 is disposed on the substrate 210 and the second color pattern 233 is disposed on the first color pattern 231. Here, the first color pattern 231 may be a red (R) pattern having a first color, and the second color pattern 233 may be a blue (B) pattern having a second color.

[0121] The first color pattern 231 and the second color pattern 233 constituting the color pattern stack 230 may have different thicknesses. For example, the first color pattern 231 may have a first thickness thicker than a second thickness of the second color pattern 233.

[0122] The first color pattern 231 may have the same or substantially the same thickness and color as the first color filter 221 , and the second color pattern 233 may have the same or substantially the same thickness and color as the second color filter 223 .

[0123] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the first color pattern 231 may be formed simultaneously when the first color filter 221 is formed, and then the second color pattern 233 may be formed simultaneously when the second color filter 223 is formed.

[0124] Reference Figure 5 , a pattern defining layer 245 defining a region in which the color pattern stack 230 is disposed may be located on the substrate 210. The pattern defining layer 245 may be formed simultaneously with the black matrix 240.

[0125] Reference Figure 5 The planarization layer 250 may be located on the color filter layer 220 and the color pattern stack 230. The planarization layer 250 may be disposed to cover the color filter layer 220, the color pattern stack 230, the black matrix 240, and the pattern defining layer 245.

[0126] The planarization layer 250 may ease or planarize steps between the color filter layer 220 , the color pattern stack 230 , the black matrix 240 , and the pattern defining layer 245 constituting the color filter substrate 200 .

[0127] Figure 6 is a view illustrating the sensor region 170 and the camera region 160 in the color filter substrate 200 according to an embodiment of the present disclosure. For example, Figure 6 is an example along the Figure 1 A cross-sectional view of a portion of the color filter substrate 200 taken along a II-II′ cross section. Figure 7 2 is a graph illustrating the transmittance of the color filter substrate 200 according to the embodiment of the present disclosure according to the color filter substrate 200. Figures 1 to 5 The contents that are the same or similar to those described are omitted or briefly described in the following description.

[0128] Reference Figure 6 Since no color pattern is provided under the substrate 210 in the camera region 160 , the visible light R, G, B and the infrared light IR can pass through the substrate 210 .

[0129] In contrast, in the sensor region 170 , a color pattern stack 230 configured by stacking a first color pattern 231 and a second color pattern 233 may be provided under the substrate 210 such that the color pattern stack 230 may block visible light R, G, B while transmitting infrared light IR.

[0130] Reference Figure 7, it can be distinguished that the first color pattern transmits light with a wavelength of about 630nm or longer, the second color pattern transmits light with a wavelength of about 450nm and light with a wavelength of about 830nm or longer, and the third color pattern transmits light with a wavelength of about 530nm and light with a wavelength of about 830nm or longer, and blocks light of other wavelengths.

[0131] Reference Figure 6 and Figure 7 , the color pattern stack 230 may be configured by stacking the first color pattern 231 and the second color pattern 233 , thereby blocking the visible light R, G, and B and transmitting the infrared light IR.

[0132] In other words, when external light including visible light R, G, B and infrared light IR passes through the first color pattern 231, light R and IR having a wavelength of about 630 nm or longer may be transmitted, while light G and B having a wavelength less than about 630 nm may be blocked. When light R and IR transmitted through the first color pattern 231 passes through the second color pattern 231, light IR having a wavelength of about 830 nm or longer may be transmitted, while light R having a wavelength less than about 830 nm may be blocked, thereby realizing an infrared filter that blocks visible light R, G, B and selectively transmits infrared light IR using the color pattern stack 230.

[0133] The color pattern stack 230 included in the color filter substrate 200 according to an embodiment of the present disclosure may implement an infrared filter having a high transmittance of 80% or more in an infrared (IR) band.

[0134] Figure 8 and Fig. 9 is a view illustrating a color filter substrate 200 according to an embodiment of the present disclosure. For example, Figure 8 is a view illustrating an example in which the stacking order of the color patterns of the color pattern stack 230 is different, and Fig. 9 2 is a view illustrating an example in which the number of stacked color patterns of the color pattern stack 230 is different. Figures 1 to 7 The contents that are the same or similar to those described are omitted or briefly described in the following description.

[0135] Reference Figure 8 , the color filter substrate 200 according to an embodiment of the present disclosure includes a substrate 210 , a color filter layer 220 , a color pattern stack 230 , and a planarization layer 250 .

[0136] Reference Figure 8, a color pattern stack 230 positioned to correspond to the sensor region 170 may be provided on the substrate 210. That is, the color pattern stack 230 is in the sensor region 170. The color pattern stack 230 may be provided on the same layer as the color filter layer 220.

[0137] Reference Figure 8 , the color pattern stack 230 may be configured by stacking first color patterns 231 and second color patterns 233 having different colors. For example, the color pattern stack 230 may have a stacked structure in which the second color pattern 233 is disposed on the substrate 210 and the first color pattern 231 is disposed on the second color pattern 233. Here, the first color pattern 231 may be a red (R) pattern having a first color, and the second color pattern 233 may be a blue (B) pattern having a second color.

[0138] Reference Figure 8 , the color pattern stack 230 may be configured by stacking color patterns having different colors, whereby the color pattern stack 230 functions as an infrared filter that selectively transmits infrared light by reducing the transmittance of visible light and increasing the transmittance of infrared light.

[0139] The first color pattern 231 and the second color pattern 233 constituting the color pattern stack 230 may have different thicknesses. For example, the first color pattern 231 may be thicker than the second color pattern 233.

[0140] The first color pattern 231 may have the same or substantially the same thickness and color as the first color filter 221 , and the second color pattern 233 may have the same or substantially the same thickness and color as the second color filter 223 .

[0141] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the second color pattern 233 may be formed simultaneously when the second color filter 223 is formed, and then the first color pattern 231 may be formed simultaneously when the first color filter 221 is formed.

[0142] Reference Figure 8 , when external light including visible light R, G, B and infrared light IR may pass through the second color pattern 233, light B and G having a wavelength of about 450nm and light IR having a wavelength of about 830nm may be transmitted, while red R light and part of green G light may be blocked. When light B, G, and IR transmitted through the second color pattern 233 passes through the first color pattern 231, light IR having a wavelength of about 630nm or longer may be transmitted, while light B and G having a wavelength less than about 630nm may be blocked, thereby realizing an infrared filter that blocks visible light R, G, and B and selectively transmits infrared light IR using the color pattern stack 230.

[0143] Reference Fig. 9 , the color pattern stack 230 may be configured by stacking a first color pattern 231, a second color pattern 233, and a third color pattern 235 having different colors. The third color pattern 235 is located on at least one of the first color pattern 231 or the second color pattern 233. For example, the color pattern stack 230 may have a stacked structure in which the first color pattern 231, the second color pattern 233, and the third color pattern 235 are sequentially disposed on the substrate 210. In another example, as Fig. 9 As shown, the color pattern stack 230 has a stacked structure including a first color pattern 231, a third color pattern 235 on the first color pattern 232, and a second color pattern 233 on the third color pattern 235. Here, the first color pattern 231 may be a red (R) pattern having a first color, the second color pattern 233 may be a blue (B) pattern having a second color, and the third color pattern 235 may be a green (G) pattern having a third color.

[0144] Reference Fig. 9 , the color pattern stack 230 may be configured by stacking color patterns having different colors, whereby the color pattern stack 230 functions as an infrared filter that selectively transmits infrared light by reducing the transmittance of visible light and increasing the transmittance of infrared light.

[0145] The first color pattern 231, the second color pattern 233, and the third color pattern 235 constituting the color pattern stack 230 may have different thicknesses. For example, the first color pattern 231 may be thicker than the second color pattern 233 and the third color pattern 235. In addition, the thickness of the color pattern may decrease in the order of the first color pattern 231, the second color pattern 233, and the third color pattern 235.

[0146] The first color pattern 231 may have the same or substantially the same thickness and color as the first color filter 221 , the second color pattern 233 may have the same or substantially the same thickness and color as the second color filter 223 , and the third color pattern 235 may have the same or substantially the same thickness and color as the third color filter 225 .

[0147] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the second color pattern 233 may be formed simultaneously when the second color filter 223 is formed, and then the first color pattern 231 may be formed simultaneously when the first color filter 221 is formed.

[0148] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the first color pattern 231 may be formed simultaneously with the formation of the first color filter 221, the second color pattern 233 may be formed simultaneously with the formation of the second color filter 223, and finally, the third color pattern 235 may be formed simultaneously with the formation of the third color filter 225.

[0149] Reference Fig. 9 When external light including visible light R, G, B and infrared light IR passes through the first color pattern 231, light R and IR having a wavelength of about 630 nm or longer may be transmitted, while light G and B having a wavelength less than about 630 nm may be blocked. When light R and IR transmitted through the first color pattern 231 passes through the second color pattern 233, light IR having a wavelength of about 830 nm or longer may be transmitted, while light R having a wavelength less than about 830 nm may be blocked. When light IR transmitted through the second color pattern 233 passes through the third color pattern 235, partially transmitted red (R) light may be blocked, thereby realizing an infrared filter that blocks visible light R, G, B and selectively transmits infrared light IR using the color pattern stack 230.

[0150] The color filter substrate 200 according to an embodiment of the present disclosure may include the color pattern stack 230 by stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , thereby implementing an infrared filter that selectively transmits infrared light.

[0151] The color filter substrate 200 according to an embodiment of the present disclosure may have the color pattern stack 230 by stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , thereby implementing an infrared filter that reduces external visibility without additional infrared ink.

[0152] In the color filter substrate 200 according to the embodiment of the present disclosure, the color pattern stack 230 may be formed by simultaneously stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , achieving process optimization with a simplified manufacturing process.

[0153] In the color filter substrate 200 according to the embodiment of the present disclosure, the color pattern stack 230 may be formed by simultaneously stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , so that a single material product can be realized.

[0154] Fig.10 , Fig.11 , Fig.12 and Fig.13 is a view illustrating a display device 100 according to an embodiment of the present disclosure. For example, Fig.10is a view illustrating a display device 100 having a top emission structure, Fig.11 is a view illustrating a display device 100 having a bottom emission structure, Fig.12 is a view illustrating a display device 100 including a liquid crystal layer, and Fig.13 1 is a diagram illustrating a display device 100 including a transparent area. Figures 1 to 9 The contents that are the same or similar to those described are omitted or briefly described in the following description.

[0155] Fig.10 is a view illustrating a display device 100 having a top emission structure.

[0156] Reference Fig.10 , the display device 100 according to an embodiment of the present disclosure includes a first substrate 210 , a color filter layer 220 , a color pattern stack 230 , a planarization layer 250 , a second substrate 310 , and a sensor module 350 .

[0157] Reference Fig.10 , the first substrate 210 may be a transparent substrate. The transparent substrate may be formed of glass or a transparent plastic such as polyimide, but is not limited thereto. The first substrate 210 may be disposed on the light exit portion of the display device 100 to reduce or prevent the penetration of oxygen or moisture from the external environment, and may transmit light implemented in the color filter layer 220.

[0158] Reference Fig.10 , the first substrate 210 may include a color filter layer 220 on the first substrate. Fig.10 A color filter layer 220 may be provided on the first substrate 210, the color filter layer 220 including a first color filter 221, a second color filter 223, and a third color filter 225 having different colors, and the first color filter 221, the second color filter 223, and the third color filter 225 are located in respective regions corresponding to the plurality of sub-pixels SP.

[0159] At least two of the first color filter 221, the second color filter 223, and the third color filter 225 may have different thicknesses. For example, the thickness of one color filter may be greater than the thickness of the other two color filters, while the other two color filters may have the same or substantially the same thickness. In addition, all three color filters may have different thicknesses.

[0160] The first color filter 221 may be a red (R) color filter having a first color, the second color filter 223 may be a blue (B) color filter having a second color, and the third color filter 225 may be a green (G) color filter having a third color. In other words, the red (R) color filter, the blue (B) color filter, and the green (G) color filter may be formed using a red (R) resin, a blue (B) resin, and a green (G) resin, respectively.

[0161] Reference Fig.10 , a black matrix 240 defining an opening area exposing each of the plurality of sub-pixels SP may be located on the first substrate 210 .

[0162] Each of the first sub-pixel SP1 , the second sub-pixel SP2 , and the third sub-pixel SP3 may be provided with a black matrix 240 located between the sub-pixel regions, and the sub-pixel regions may be divided by the black matrix 240 .

[0163] In other words, the black matrix 240 may allow light emitted from the light emitting element to be emitted only from each of the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3. Therefore, the black matrix 240 may reduce or prevent color mixing at the boundary of each subpixel region.

[0164] Reference Fig.10 , a color pattern stack 230 positioned to correspond to the sensor region 170 may be provided on the first substrate 210. The color pattern stack 230 may be provided on the same layer as the color filter layer 220.

[0165] The color pattern stack 230 may be configured by stacking color patterns having different colors, thereby serving as an infrared filter that selectively transmits infrared light by reducing the transmittance of visible light and increasing the transmittance of infrared light.

[0166] The color pattern stack 230 may have a thickness in the range of 1 μm to 5 μm. In other words, the total thickness of the color pattern stack 230 may be in the range of 1 μm to 5 μm. If the color pattern stack 230 has a thickness less than 1 μm, the transmittance of visible light may be relatively high, and if the color pattern stack 230 has a thickness greater than 5 μm, the transmittance of visible light may be effectively reduced, but the thickness of the display device 100 including the color pattern stack 230 may increase.

[0167] Reference Fig.10, the color pattern stack 230 may be configured by stacking first color patterns 231 and second color patterns 233 having different colors. For example, the color pattern stack 230 may have a stacked structure in which the first color pattern 231 is disposed on the first substrate 210 and the second color pattern 233 is disposed on the first color pattern 231. Here, the first color pattern 231 may be a red (R) pattern having a first color, and the second color pattern 233 may be a blue (B) pattern having a second color.

[0168] The first color pattern 231 and the second color pattern 233 constituting the color pattern stack 230 may have different thicknesses, for example, the first color pattern 231 may be thicker than the second color pattern 233 .

[0169] The first color pattern 231 may have the same or substantially the same thickness and color as the first color filter 221 , and the second color pattern 233 may have the same or substantially the same thickness and color as the second color filter 223 .

[0170] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the first color pattern 231 may be formed simultaneously when the first color filter 221 is formed, and then the second color pattern 233 may be formed simultaneously when the second color filter 223 is formed.

[0171] The color pattern stack 230 may include a combination of Figures 5 to 9 Various embodiments of color pattern stack 230 are described.

[0172] Reference Fig.10 A pattern defining layer 245 defining a region in which the color pattern stack 230 is disposed may be located on the first substrate 210. The pattern defining layer 245 may be formed simultaneously with the black matrix 240.

[0173] Reference Fig.10 The planarization layer 250 may be located on the color filter layer 220 and the color pattern stack 230. The planarization layer 250 may be disposed to cover the color filter layer 220, the color pattern stack 230, the black matrix 240, and the pattern defining layer 245.

[0174] The planarization layer 250 may alleviate or planarize steps between the color filter layer 220 , the color pattern stack 230 , the black matrix 240 , and the pattern defining layer 245 constituting the color filter substrate 200 .

[0175] Reference Fig.10A second substrate 310 spaced apart from the first substrate 210 may be disposed on the planarization layer 250, and the second substrate 310 may be a transparent substrate. The transparent substrate may be formed of glass or transparent plastic. The transparent substrate may be formed in a stacked structure of various transparent insulating layers.

[0176] The second substrate 310 may be a TFT substrate including a thin film transistor TFT. The TFT substrate may include various signal lines and capacitors, as well as the thin film transistor TFT. The thin film transistor TFT may include a switching thin film transistor, a driving thin film transistor, and a sensing thin film transistor. The signal line may include a gate line, a data line, a power line, and a reference line.

[0177] Reference Fig.10 , a bank 330 and a light emitting element 320 may be disposed between the planarization layer 250 and the second substrate 310 .

[0178] The bank 330 may be disposed on the second substrate 310 to overlap a portion of an upper surface of the first electrode 321. The bank 330 may be disposed to expose a portion of an upper surface of the first electrode 321.

[0179] The light emitting element 320 may include a first electrode 321 disposed on the second substrate 310 , a light emitting layer 323 disposed on the first electrode 321 , and a second electrode 325 disposed on the light emitting layer 323 .

[0180] The first electrode 321 is a pixel electrode serving as an anode, and may be independently provided in each sub-pixel.

[0181] The first electrode 321 may include a reflective metal material having a low work function and excellent reflection efficiency. The first electrode 321 may include a reflective electrode and a transparent electrode.

[0182] For example, the reflective metal constituting the reflective electrode included in the first electrode 321 may include any one selected from the group consisting of aluminum (Al), silver (Ag), copper (Cu), magnesium (Mg), platinum (Pt), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir) and chromium (Cr), or may include any one of alloys containing at least one of them.

[0183] For example, the first electrode 321 can be formed as a multilayer structure of any one of a stacked structure (Ti / Al / Ti) of aluminum (Al) and titanium (Ti), a stacked structure (ITO / Al / ITO) of aluminum (Al) and ITO, an alloy of APC (Ag / Pd / Cu), and a stacked structure (ITO / APC / ITO) of APC alloy and ITO, or can be formed as a single-layer structure or a multilayer structure of at least one of aluminum (Al), silver (Ag), copper (Cu), magnesium (Mg), platinum (Pt), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr) and their alloys.

[0184] In addition, the first electrode 321 may include a reflective electrode and a transparent electrode disposed on the reflective electrode. The reflective electrode may be the above-mentioned reflective metal, and the transparent electrode may include a transparent conductive oxide (TCO) such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), etc.

[0185] The light emitting layer 323 may be an organic light emitting layer, which may include a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, and an electron injection layer to improve light emitting efficiency.

[0186] The second electrode 325 is a common electrode serving as a cathode, and may be commonly provided in all sub-pixels SP.

[0187] The second electrode 325 may be a semi-transmissive electrode including a semi-transmissive metal or a transparent electrode.

[0188] The second electrode 325 may include any one selected from the group consisting of aluminum (Al), silver (Ag), copper (Cu), magnesium (Mg), platinum (Pt), gold (Au), nickel (Ni), chromium (Cr), titanium (Ti), tungsten (W), tantalum (Ta), cobalt (Co), iron (Fe) and molybdenum (Mo), or may include any one of an alloy containing at least one of them.

[0189] The encapsulation layer 340 may be disposed on the light emitting element 320 .

[0190] The encapsulation layer 340 is formed on the second electrode 325 of the light-emitting element 320 and is used to reduce or prevent external moisture from penetrating into the light-emitting layer 323. The encapsulation layer 340 may be formed of an inorganic insulating material. Alternatively, the encapsulation layer 340 may have a structure in which a plurality of inorganic insulating materials and at least one organic insulating material are stacked. For example, the encapsulation layer 340 may be formed so that the first inorganic insulating material and the second inorganic insulating material overlap each other with the organic insulating material interposed between the first inorganic insulating material and the second inorganic insulating material.

[0191] Reference Fig.10 , may include a sensor module 350 located in an area corresponding to the sensor area 170 and disposed on the rear surface of the second substrate 310. The sensor module 350 includes, but is not limited to, a proximity sensor, an illumination sensor, or an object and human recognition sensor.

[0192] The sensor module 350 may be an infrared (IR) sensor module using an infrared band. The infrared (IR) sensor module may detect the outside of the display device using light in the infrared band.

[0193] Reference Fig.10 , a transparent resin may be disposed between the color pattern stack 230 and the second substrate 310 in the sensor region 170 . When the planarization layer 250 covers the color pattern stack 230 , a transparent resin may be disposed between the planarization layer 250 and the second substrate 310 .

[0194] In addition, the display device 100 according to the embodiment of the present disclosure may further include a camera area disposed adjacent to the sensor area 170. In the camera area, a transparent resin may be disposed between the first substrate 210 and the second substrate 310. When the planarization layer 250 covers the first substrate 210, a transparent resin may be disposed between the planarization layer 250 and the second substrate 310.

[0195] The transparent resin may be provided so that no air gap is formed between the color pattern stack 230 and the second substrate 310 of the sensor region 170 or between the first substrate 210 and the second substrate 310 of the camera region. If there is an air gap between the color pattern stack 230 and the second substrate 310 of the sensor region 170, light passing through the color pattern stack 230 may be scattered in the air gap, so that the efficiency of light incident on the sensor module 350 is deteriorated or reduced. If there is an air gap between the first substrate 210 and the second substrate 310 of the camera region, light passing through the first substrate 210 may be scattered in the air gap, so that the efficiency of light incident on the camera module is deteriorated or reduced.

[0196] Reference Fig.14 The transparent resin provided in the sensor area and the camera area is described in detail.

[0197] Fig.11 is a view illustrating a display device 100 having a bottom emission structure.

[0198] Reference Fig.11 , the display device 100 according to an embodiment of the present disclosure includes a first substrate 310 , a color filter layer 220 , a color pattern stack 230 , a planarization layer 250 , a second substrate 360 ​​, and a sensor module 350 .

[0199] Reference Fig.11 The first substrate 310 may be a transparent substrate. The transparent substrate may be formed of glass or transparent plastic. The transparent substrate may be formed as a stacked structure of various transparent insulating layers.

[0200] The first substrate 310 may be a TFT substrate including a thin film transistor TFT. The TFT substrate may include various signal lines and capacitors, as well as the thin film transistor TFT. The thin film transistor TFT may include a switching thin film transistor, a driving thin film transistor, and a sensing thin film transistor. The signal line may include a gate line, a data line, a power line, and a reference line.

[0201] Reference Fig.11 , the first substrate 310 may include a plurality of sub-pixels SP and a sensor region 170 .

[0202] Reference Fig.11 A color filter layer 220 may be disposed on the first substrate 310, the color filter layer 220 including a first color filter 221, a second color filter 223, and a third color filter 225 having different colors, and the first color filter 221, the second color filter 223, and the third color filter 225 are located in respective regions corresponding to the plurality of sub-pixels SP.

[0203] At least two of the first color filter 221, the second color filter 223, and the third color filter 225 may have different thicknesses. For example, one color filter may have a thickness greater than that of the other two color filters, while the other two color filters may have the same or substantially the same thickness. In addition, all three color filters may have different thicknesses.

[0204] The first color filter 221 may be a red (R) color filter having a first color, the second color filter 223 may be a blue (B) color filter having a second color, and the third color filter 225 may be a green (G) color filter having a third color. In other words, the red (R) color filter, the blue (B) color filter, and the green (G) color filter may be formed using a red (R) resin, a blue (B) resin, and a green (G) resin, respectively.

[0205] Reference Fig.11 , a color pattern stack 230 positioned to correspond to the sensor region 170 may be provided on the first substrate 310. The color pattern stack 230 may be provided on the same layer as the color filter layer 220.

[0206] The color pattern stack 230 may be configured by stacking color patterns having different colors, thereby serving as an infrared filter that selectively transmits infrared light by reducing the transmittance of visible light and increasing the transmittance of infrared light.

[0207] The color pattern stack 230 may have a thickness of 1 μm to 5 μm. In other words, the total thickness of the color pattern stack 230 may be 1 μm to 5 μm. If the color pattern stack 230 has a thickness less than 1 μm, the transmittance of visible light may be relatively high, and if the color pattern stack 230 has a thickness greater than 5 μm, the transmittance of visible light may be effectively reduced, but the thickness of the display device 100 including the color pattern stack 230 may increase.

[0208] Reference Fig.11 , the color pattern stack 230 may be configured by stacking first color patterns 231 and second color patterns 233 having different colors. For example, the color pattern stack 230 may have a stacked structure in which the first color pattern 231 is disposed on the first substrate 310 and the second color pattern 233 is disposed on the first color pattern 231. Here, the first color pattern 231 may be a red (R) color pattern having a first color, and the second color pattern 233 may be a blue (B) color pattern having a second color.

[0209] The first color pattern 231 and the second color pattern 233 constituting the color pattern stack 230 may have different thicknesses. For example, the first color pattern 231 may be thicker than the second color pattern 233.

[0210] The first color pattern 231 may have the same or substantially the same thickness and color as the first color filter 221 , and the second color pattern 233 may have the same or substantially the same thickness and color as the second color filter 223 .

[0211] The color pattern stack 230 may be formed simultaneously with the color filter layer 220. For example, the first color pattern 231 may be formed simultaneously when the first color filter 221 is formed, and then the second color pattern 233 may be formed simultaneously when the second color filter 223 is formed.

[0212] The color pattern stack 230 may include a combination of Figures 5 to 10 Various embodiments of color pattern stack 230 are described.

[0213] Reference Fig.11 , a pattern defining layer 245 defining a region in which the color pattern stack 230 is disposed may be located on the first substrate 310 .

[0214] Reference Fig.11 , the planarization layer 250 may be located on the color filter layer 220 and the color pattern stack 230 . The planarization layer 250 may be disposed to cover the color filter layer 220 , the color pattern stack 230 , and the pattern defining layer 245 .

[0215] The planarization layer 250 may ease or planarize steps between the color filter layer 220 , the color pattern stack 230 , and the pattern defining layer 245 constituting the color filter substrate 200 .

[0216] Reference Fig.11 , a bank 330 and a light emitting element 320 may be disposed between the planarization layer 250 and the second substrate 360 ​​.

[0217] The bank 330 may be disposed on the planarization layer 250 to overlap a portion of an upper surface of the first electrode 321. The bank 330 may be disposed to expose a portion of an upper surface of the first electrode 321.

[0218] The light emitting element 320 may include a first electrode 321 disposed on the planarization layer 250 , a light emitting layer 323 disposed on the first electrode 321 , and a second electrode 325 disposed on the light emitting layer 323 .

[0219] The first electrode 321 is a pixel electrode serving as an anode, and may be independently provided in each sub-pixel.

[0220] The first electrode 321 may be a transparent electrode including a transparent conductive material.

[0221] For example, the transparent conductive material included in the first electrode 321 may include any one of the following: indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), zinc tin oxide (ZTO), fluorine tin oxide (FTO), aluminum zinc oxide (AZO), antimony tin oxide (ATO), titanium oxide (TiO2), indium oxide (In2O3), tin oxide (SnO2), zinc oxide (ZnO) and silver-magnesium (Ag-Mg) alloy.

[0222] The light emitting layer 323 may be an organic light emitting layer, which may include a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, and a multilayer of an electron injection layer to improve light emitting efficiency.

[0223] The second electrode 325 is a common electrode serving as a cathode, and may be commonly provided in all sub-pixels SP.

[0224] The second electrode 325 may include a reflective electrode and a transparent electrode.

[0225] For example, the reflective metal constituting the reflective electrode included in the second electrode 325 may include any one selected from the group consisting of aluminum (Al), silver (Ag), copper (Cu), magnesium (Mg), platinum (Pt), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir) and chromium (Cr), or may include any one of alloys containing at least one of them.

[0226] For example, the second electrode 325 can be formed as a multilayer structure of any one of a stacked structure (Ti / Al / Ti) of aluminum (Al) and titanium (Ti), a stacked structure (ITO / Al / ITO) of aluminum (Al) and ITO, an alloy of APC (Ag / Pd / Cu), and a stacked structure (ITO / APC / ITO) of APC alloy and ITO, or can be formed as a single-layer structure or a multilayer structure of at least one of aluminum (Al), silver (Ag), copper (Cu), magnesium (Mg), platinum (Pt), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr) and their alloys.

[0227] In addition, the second electrode 325 may include a reflective electrode and a transparent electrode disposed under the reflective electrode. The reflective electrode may be the above-mentioned reflective metal, and the transparent electrode may include a transparent conductive oxide (TCO) such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), etc.

[0228] An encapsulation layer 340 may be disposed on the light emitting element 320 .

[0229] The encapsulation layer 340 is formed on the second electrode 325 of the light-emitting element 320 and is used to reduce or prevent external moisture from penetrating into the light-emitting layer 323. The encapsulation layer 340 may be formed of an inorganic insulating material. Alternatively, the encapsulation layer 340 may have a structure in which a plurality of inorganic insulating materials and at least one organic insulating material are stacked. For example, the encapsulation layer 340 may be formed so that the first inorganic insulating material and the second inorganic insulating material overlap each other with the organic insulating material interposed between the first inorganic insulating material and the second inorganic insulating material.

[0230] The second substrate 360 ​​may be disposed on the encapsulation layer 340 .

[0231] The second substrate 360 ​​may be a transparent substrate, and may be formed of glass or transparent plastic such as polyimide, but is not limited thereto.

[0232] Reference Fig.11 , may include a sensor module 350 located in an area corresponding to the sensor area 170 and disposed on a rear surface of the second substrate 360. The sensor module 350 includes, but is not limited to, an illumination sensor, or an object and human recognition sensor.

[0233] The sensor module 350 may be an infrared (IR) sensor module using an infrared band. The infrared (IR) sensor module may detect the outside of the display device using light in the infrared band.

[0234] Reference Fig.11, a transparent resin may be disposed between the color pattern stack 230 and the second substrate 360 ​​in the sensor region 170 . When the planarization layer 250 covers the color pattern stack 230 , a transparent resin may be disposed between the planarization layer 250 and the second substrate 360 ​​.

[0235] In addition, the display device 100 according to the embodiment of the present disclosure may further include a camera area disposed adjacent to the sensor area 170. In the camera area, a transparent resin may be disposed between the first substrate 310 and the second substrate 360. When the planarization layer 250 covers the first substrate 310, a transparent resin may be disposed between the planarization layer 250 and the second substrate 360.

[0236] The transparent resin may be provided so that an air gap is not formed between the color pattern stack 230 and the second substrate 360 ​​of the sensor region 170 or between the first substrate 310 and the second substrate 360 ​​of the camera region. If there is an air gap between the color pattern stack 230 and the second substrate 360 ​​of the sensor region 170, light passing through the color pattern stack 230 may be scattered in the air gap, so that the efficiency of light incident on the sensor module 350 is deteriorated or reduced. If there is an air gap between the first substrate 310 and the second substrate 360 ​​of the camera region, light passing through the first substrate 310 may be scattered in the air gap, so that the efficiency of light incident on the camera module is deteriorated or reduced.

[0237] Reference Fig.14 The transparent resin provided in the sensor area and the camera area is described in detail.

[0238] Fig.12 is a view illustrating a display device 100 including a liquid crystal layer.

[0239] Reference Fig.12 , the display device 100 according to an embodiment of the present disclosure includes a first substrate 210 , a color filter layer 220 , a color pattern stack 230 , a planarization layer 250 , a liquid crystal layer 420 , a second substrate 410 , and a sensor module 450 .

[0240] Reference Fig.12 The first substrate 210, the color filter layer 220, the color pattern stack 230, the planarization layer 250 and the second substrate 410 are combined with Fig.10 The components described are the same or similar, and thus a detailed description thereof will not be given again.

[0241] Reference Fig.12 , a color pattern stack 230 positioned to correspond to the sensor region 170 may be provided on the first substrate 210. The color pattern stack 230 may be provided on the same layer as the color filter layer 220.

[0242] The color pattern stack 230 may include a combination of Figures 5 to 11 Various embodiments of color pattern stack 230 are described.

[0243] Reference Fig.12 , a liquid crystal layer 420 may be disposed between the planarization layer 250 and the second substrate 410 .

[0244] Reference Fig.12 , columnar spacers 425 and 435 may be disposed in the liquid crystal layer 420 as a means for maintaining a constant gap between the planarization layer 250 and the second substrate 410 , supporting the planarization layer 250 and the second substrate 410 .

[0245] Reference Fig.12 , the second substrate 410 may be a TFT substrate including a thin film transistor TFT. The TFT substrate may include various signal lines and capacitors, as well as the thin film transistor TFT. The thin film transistor TFT may include a switching thin film transistor, a driving thin film transistor, and a sensing thin film transistor. The signal line may include a gate line, a data line, a power line, and a reference line.

[0246] A backlight unit (not shown) serving as a light source may be disposed on the rear surface of the second substrate 410 so that light emitted from the backlight unit may pass through the color filter layer 220 to the outside.

[0247] Reference Fig.12 , may include a sensor module 450 located in an area corresponding to the sensor area 170 and disposed on the rear surface of the second substrate 410. The sensor module 450 includes, but is not limited to, an illumination sensor, or an object and human recognition sensor.

[0248] The sensor module 450 may be an infrared (IR) sensor module using an infrared band. The infrared (IR) sensor module may detect the outside of the display device using light in the infrared band.

[0249] Reference Fig.12 , a transparent resin 430 may be disposed between the color pattern stack 230 and the second substrate 410 in the sensor region 170 . When the planarization layer 250 covers the color pattern stack 230 , a transparent resin 430 may be disposed between the planarization layer 250 and the second substrate 410 .

[0250] In addition, the display device 100 according to the embodiment of the present disclosure may further include a camera area disposed adjacent to the sensor area 170. In the camera area, a transparent resin may be disposed between the first substrate 210 and the second substrate 410. When the planarization layer 250 covers the first substrate 210, a transparent resin may be disposed between the planarization layer 250 and the second substrate 410.

[0251] The transparent resin may be provided so that an air gap is not formed between the color pattern stack 230 and the second substrate 410 of the sensor region 170 or between the first substrate 210 and the second substrate 410 of the camera region. If there is an air gap between the color pattern stack 230 and the second substrate 410 of the sensor region 170, light passing through the color pattern stack 230 may be scattered in the air gap, so that the efficiency of light incident on the sensor module 450 is deteriorated or reduced. If there is an air gap between the first substrate 210 and the second substrate 410 of the camera region, light passing through the first substrate 210 may be scattered in the air gap, so that the efficiency of light incident on the camera module is deteriorated or reduced.

[0252] Reference Fig.14 The transparent resin provided in the sensor area and the camera area is described in detail.

[0253] Fig.13 is a view illustrating a display device 100 including a transparent area.

[0254] Reference Fig.13 , the display device 100 according to an embodiment of the present disclosure includes a first substrate 210 , a color filter layer 220 , a color pattern stack 230 , a planarization layer 250 , a second substrate 310 , and a sensor module 350 .

[0255] Reference Fig.13 The first substrate 210, the color filter layer 220, the color pattern stack 230, the planarization layer 250, the second substrate 310 and the sensor module 350 are combined with Fig.10 The components described are the same or similar, and therefore a detailed description thereof will not be given again.

[0256] Reference Fig.13 , the first substrate 210 may include a plurality of sub-pixels SP, a transparent area TA and a sensor area 170. In addition to including the transparent area TA, Fig.13 The display device 100 shown can be used with Fig.10 The illustrated display devices 100 have the same or substantially the same configuration.

[0257] Reference Fig.13 , the color filter layer 220 may further include a transparent area TA in which no color filter is disposed. A transparent planarization layer 250 may be disposed in the transparent area TA without using an additional color resin. The transparent area may be used as a transmission area for transmitting external light or as a white (W) sub-pixel emitting white (W) light.

[0258] Reference Fig.13Since no light emitting element is disposed in the transparent area TA, there is no light emission of the light emitting element, and thus the transparent area can be used as a transmission area for transmitting external light and used in a transparent display device.

[0259] Furthermore, when a white light emitting element (not shown) is disposed in the transparent area TA, the transparent area TA may be used as a white W sub-pixel.

[0260] Reference Fig.13 , a color pattern stack 230 positioned to correspond to the sensor region 170 may be provided on the first substrate 210. The color pattern stack 230 may be provided on the same layer as the color filter layer 220.

[0261] The color pattern stack 230 may include a combination of Figures 5 to 11 Various embodiments of color pattern stack 230 are described.

[0262] Reference Fig.13 , may include a sensor module 350 located in an area corresponding to the sensor area 170 and disposed on the rear surface of the second substrate 310. The sensor module 350 includes, but is not limited to, an illumination sensor, or an object and human recognition sensor.

[0263] The sensor module 350 may be an infrared (IR) sensor module using an infrared band. The infrared (IR) sensor module may detect the outside of the display device using light in the infrared band.

[0264] Reference Fig.13 , a transparent resin may be disposed between the color pattern stack 230 and the second substrate 310 in the sensor region 170 . When the planarization layer 250 covers the color pattern stack 230 , a transparent resin may be disposed between the planarization layer 250 and the second substrate 310 .

[0265] In addition, the display device 100 according to the embodiment of the present disclosure may further include a camera area disposed adjacent to the sensor area 170. In the camera area, a transparent resin may be disposed between the first substrate 210 and the second substrate 310. When the planarization layer 250 covers the first substrate 210, a transparent resin may be disposed between the planarization layer 250 and the second substrate 310.

[0266] The transparent resin may be provided so that an air gap is not formed between the color pattern stack 230 and the second substrate 310 of the sensor region 170 or between the first substrate 210 and the second substrate 310 of the camera region. If there is an air gap between the color pattern stack 230 and the second substrate 310 of the sensor region 170, light passing through the color pattern stack 230 may be scattered in the air gap, so that the efficiency of light incident on the sensor module 350 is deteriorated or reduced. If there is an air gap between the first substrate 210 and the second substrate 310 of the camera region, light passing through the first substrate 210 may be scattered in the air gap, so that the efficiency of light incident on the camera module is deteriorated or reduced.

[0267] Reference Fig.14 The transparent resin provided in the sensor area and the camera area is described in detail.

[0268] Fig.14 1 is a view illustrating a camera area 160 and a sensor area 170 in a display device according to an embodiment of the present disclosure. For example, Fig.14 It is along Figure 1 II-II' section. Figures 1 to 13 The contents that are the same or similar to the contents described below may be omitted or briefly described.

[0269] Reference Fig.14 , a first transparent resin 525 may be disposed between the first substrate 210 and the second substrate 510 in the camera region 160 . When the planarization layer 250 covers the first substrate 210 , the first transparent resin 525 may be disposed between the planarization layer 250 and the second substrate 510 .

[0270] The second transparent resin 520 may be disposed between the color pattern stack 230 and the second substrate 510 in the sensor region 170. When the planarization layer 250 covers the color pattern stack 230, the second transparent resin 520 may be disposed between the planarization layer 250 and the second substrate 510.

[0271] The first transparent resin 525 disposed in the camera region 160 may be thicker than the second transparent resin 520 disposed in the sensor region 170 .

[0272] The first transparent resin 525 may be disposed so that no air gap is formed between the first substrate 210 and the second substrate 510. If there is an air gap between the first substrate 210 and the second substrate 510, light passing through the first substrate 210 may be scattered in the air gap, so that the efficiency of light incident on the camera module 555 is deteriorated or reduced.

[0273] The second transparent resin 520 may be disposed so that an air gap is not formed between the color pattern stack 230 and the second substrate 510. If there is an air gap between the color pattern stack 230 and the second substrate 510, light passing through the color pattern stack 230 may be scattered in the air gap, so that the efficiency of light incident on the sensor module 550 is deteriorated or reduced.

[0274] The first transparent resin 525 and the second transparent resin 520 may have substantially the same light transmittance as the first substrate 210 and the second substrate 510. The refractive index difference between the first transparent resin 525 and the second transparent resin 520 and the first substrate 210 and the second substrate 510 may be about 0.1 or less. For example, the first substrate 210 and the second substrate 510 may have a refractive index of about 1.45 to 1.55, and the first transparent resin 525 and the second transparent resin 520 may have a refractive index of about 1.35 to 1.65.

[0275] The first transparent resin 525 and the second transparent resin 520 have high transparency and thus excellent light transmittance and easily controllable viscosity, and may be formed of acrylic, polyurethane, epoxy, vinyl, polyester, or polyamide.

[0276] The display device 100 according to an embodiment of the present disclosure may have the color pattern stack 230 by stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , thereby implementing an infrared filter that selectively transmits infrared light.

[0277] The display device 100 according to an embodiment of the present disclosure may have the color pattern stack 230 by stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , thereby implementing an infrared filter that reduces external visibility without additional infrared ink.

[0278] In the display device 100 according to the embodiment of the present disclosure, the color pattern stack 230 may be formed by simultaneously stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , achieving process optimization with a simplified manufacturing process.

[0279] In the display device 100 according to the embodiment of the present disclosure, the color pattern stack 230 may be formed by simultaneously stacking color patterns having the same or substantially the same configuration as the color filter layer 220 , so that a single material product can be realized.

[0280] The above-mentioned embodiments of the present disclosure are briefly described below.

[0281] An embodiment of the present disclosure may provide a color filter substrate, which includes: a substrate; a color filter layer, which is on the substrate and includes a first color filter having a first color, a second color filter having a second color that may be different from the first color, and a third color filter having a third color that may be different from the first color and the second color, and the color filter layer is configured to be positioned in areas corresponding to multiple sub-pixels respectively; a color pattern stack, which is configured to be arranged above a sensor area, the color pattern stack including a first color pattern and a second color pattern on the first color pattern and having a different color from the first color pattern; and a planarization layer, which is on the color filter layer and the color pattern stack.

[0282] In the color filter substrate according to an embodiment of the present disclosure, the first color pattern may have a first thickness, and the second color pattern may have a second thickness that may be different from the first thickness.

[0283] In the color filter substrate according to an embodiment of the present disclosure, the color pattern stack may have a thickness in the range of 1 μm to 5 μm.

[0284] In the color filter substrate according to an embodiment of the present disclosure, the color pattern stack may further include a third color pattern on at least one of the first color pattern or the second color pattern, the third color pattern having a third color pattern of a different color from the first color pattern and the second color pattern.

[0285] In the color filter substrate according to an embodiment of the present disclosure, the first color pattern may have the first color of the first color filter and have the same thickness as the first color filter, the second color pattern may have the second color of the second color filter and have the same thickness as the second color filter, and the third color pattern may have the third color of the third color filter and have the same thickness as the third color filter.

[0286] In the color filter substrate according to an embodiment of the present disclosure, a first thickness of the first color pattern may be thicker than a second thickness of the second color pattern and thicker than a third thickness of the third color pattern.

[0287] In the color filter substrate according to an embodiment of the present disclosure, the first color pattern may be a red color filter, the second color pattern may be a blue color filter, and the third color pattern may be a green color filter.

[0288] The color filter substrate according to an embodiment of the present disclosure may also include a transparent area that may lack any color filter.

[0289] The color filter substrate according to an embodiment of the present disclosure may further include a black matrix on the substrate, and the black matrix is ​​configured to define an opening area exposing each of the plurality of sub-pixels.

[0290] The color filter substrate according to an embodiment of the present disclosure may further include a pattern defining film on the substrate, the pattern defining film defining a region in which the color pattern stack is disposed.

[0291] An embodiment of the present disclosure may provide a display device, which includes: a first substrate, the first substrate including a plurality of sub-pixels and a sensor area; a color filter layer, the color filter layer including a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, and the color filter layer overlaps the plurality of sub-pixels; a color pattern stack, the color pattern stack overlaps the sensor area, the color pattern stack includes a first color pattern and a second color pattern on the first color pattern and having a different color from the first color pattern; a planarization layer, the planarization layer is on the color filter layer and the color pattern stack; a second substrate, the second substrate is on the planarization layer; and a sensor module, the sensor module overlaps the sensor area.

[0292] In the display device according to the embodiment of the present disclosure, the first color pattern may have a first thickness and the second color pattern may have a second thickness that may be different from the first thickness.

[0293] In the display device according to the embodiment of the present disclosure, the color pattern stack may have a thickness in the range of 1 μm to 5 μm.

[0294] In the display device according to the embodiment of the present disclosure, the color pattern stack may further include a third color pattern on at least one of the first color pattern or the second color pattern, the third color pattern having a different color from the first color pattern and the second color pattern.

[0295] In a display device according to an embodiment of the present disclosure, the first color pattern may have the first color of the first color filter and have the same thickness as the first color filter, the second color pattern may have the second color of the second color filter and have the same thickness as the second color filter, and the third color pattern may have the third color of the third color filter and have the same thickness as the third color filter.

[0296] In the display device according to the embodiment of the present disclosure, a first thickness of the first color pattern may be thicker than a second thickness of the second color pattern and thicker than a third thickness of the third color pattern.

[0297] In the display device according to the embodiment of the present disclosure, the first color pattern may be a red color filter, the second color pattern may be a blue color filter, and the third color pattern may be a green color filter.

[0298] The display device according to an embodiment of the present disclosure may further include a transparent area that may lack any color filter.

[0299] The display device according to the embodiment of the present disclosure may further include a black matrix defining an opening area exposing each of the plurality of sub-pixels.

[0300] The display device according to an embodiment of the present disclosure may further include a pattern defining film defining a region where the color pattern stack is disposed.

[0301] The display device according to an embodiment of the present disclosure may further include a first transparent resin in a region overlapping the sensor region, the first transparent resin being between the color pattern stack and the second substrate.

[0302] The display device according to the embodiment of the present disclosure may further include a camera area adjacent to the sensor area; and a second transparent resin overlapping the camera area, the second transparent resin being between the first substrate and the second substrate.

[0303] In the display device according to the embodiment of the present disclosure, the second transparent resin overlapping the camera area may be thicker than the first transparent resin overlapping the sensor area.

[0304] The display device according to an embodiment of the present disclosure may further include: a light emitting element between the planarization layer and the second substrate; and an encapsulation layer on the light emitting element. The light emitting element may include a first electrode on the second substrate, a light emitting layer on the first electrode, and a second electrode on the light emitting layer. The second substrate may be a thin film transistor substrate including a thin film transistor (TFT).

[0305] In the display device according to the embodiment of the present disclosure, the first electrode may include a reflective electrode and a transparent electrode.

[0306] The display device according to an embodiment of the present disclosure may further include: a light emitting element between the planarization layer and the second substrate; and an encapsulation layer on the light emitting element. The light emitting element may include a first electrode on the planarization layer, a light emitting layer on the first electrode, and a second electrode on the light emitting layer. The first substrate may be a TFT substrate including a thin film transistor.

[0307] In the display device according to the embodiment of the present disclosure, the second electrode may include a reflective electrode and a transparent electrode.

[0308] The display device according to the embodiment of the present disclosure may further include a liquid crystal layer disposed between the second substrate and the planarization layer. The second substrate may be a thin film transistor substrate including a thin film transistor (TFT).

[0309] An embodiment of the present disclosure may provide a display device, comprising: a substrate, the substrate comprising a first area and a second area that can be separated from the first area; a plurality of sub-pixels in the first area but not in the second area; a color filter, the color filter overlapping with the plurality of sub-pixels in the first area; and a color pattern stack overlapping with the second area, the color pattern stack comprising a first color pattern having a first color and a second color pattern on the first color pattern and having a second color that can be different from the first color.

[0310] In the display device according to an embodiment of the present disclosure, the color filter may include a first color filter having a first color, a second color filter having a second color that may be different from the first color, and a third color filter having a third color that may be different from the first color and the second color.

[0311] The first color of the first color pattern may be the same as the first color of the first color filter, and the second color of the second color pattern may be the same as the second color of the second color filter.

[0312] In the display device according to the embodiment of the present disclosure, the first color pattern may have a first thickness, and the second color pattern may have a second thickness different from the first thickness.

[0313] In the display device according to the embodiment of the present disclosure, the color pattern stack may further include a third color pattern on at least one of the first color pattern or the second color pattern, the third color pattern having a different color from the first color pattern and the second color pattern.

[0314] In the display device according to the embodiment of the present disclosure, the first color pattern may have the same thickness as the first color filter, the second color pattern may have the same thickness as the second color filter, and the third color pattern may have the same thickness as the third color filter.

[0315] In the display device according to the embodiment of the present disclosure, the display device may further include a sensor that may overlap with the second area but not overlap with the first area.

[0316] The above description has been provided to enable any person skilled in the art to make and use the technical concept of the present disclosure, and the above description is provided in the context of a specific application and its requirements. Various modifications, additions and substitutions to the described embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the technical concept and scope of the present disclosure. The above description and accompanying drawings provide examples of the technical concept of the present disclosure for illustrative purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the technical concept of the present disclosure.

[0317] CROSS-REFERENCE TO RELATED APPLICATIONS

[0318] This application claims priority to Korean Patent Application No. 10-2023-0083714, filed on Jun. 28, 2023, which is hereby incorporated by reference for all purposes as if fully set forth herein.

Claims

1. A color filter substrate, comprising: substrate; a color filter layer on the substrate and including a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, and the color filter layer is configured to be located in regions respectively corresponding to the plurality of sub-pixels; a color pattern stack configured to be disposed over the sensor area, the color pattern stack including a first color pattern and a second color pattern on the first color pattern and having a different color than the first color pattern; as well as A planarization layer is stacked on the color filter layer and the color pattern layer.

2. The color filter substrate according to claim 1, wherein: The first color pattern has a first thickness and the second color pattern has a second thickness different from the first thickness.

3. The color filter substrate according to claim 1, wherein The color pattern stack has a thickness in the range of 1 μm to 5 μm.

4. The color filter substrate according to claim 2, wherein: The color pattern stack also includes: a third color pattern on at least one of the first color pattern or the second color pattern, the third color pattern having a different color from the first color pattern and the second color pattern.

5. The color filter substrate according to claim 4, wherein: The first color pattern has the first color of the first color filter and has the same thickness as the first color filter, the second color pattern has the second color of the second color filter and has the same thickness as the second color filter, and the third color pattern has the third color of the third color filter and has the same thickness as the third color filter.

6. The color filter substrate according to claim 5, wherein: A first thickness of the first color pattern is thicker than a second thickness of the second color pattern and thicker than a third thickness of the third color pattern.

7. The color filter substrate according to claim 5, wherein: The first color pattern is a red color filter, the second color pattern is a blue color filter and the third color pattern is a green color filter.

8. The color filter substrate according to claim 1, further comprising: A transparent area without any color filter.

9. A display device, comprising: a first substrate, the first substrate comprising a plurality of sub-pixels and a sensor region; a color filter layer including a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, and overlapping the plurality of sub-pixels; a color pattern stack overlapping the sensor area, the color pattern stack including a first color pattern and a second color pattern on the first color pattern and having a different color than the first color pattern; a planarization layer, the planarization layer being stacked on the color filter layer and the color pattern layer; a second substrate, the second substrate being on the planarization layer; as well as A sensor module overlaps the sensor area.

10. The display device according to claim 9, further comprising: A black matrix defines an opening area that exposes each of the plurality of sub-pixels.

11. The display device according to claim 9, further comprising: A pattern defining film defines a region where the color pattern stack is disposed.

12. The display device according to claim 9, further comprising: A first transparent resin is provided in a region overlapping the sensor region, the first transparent resin being between the color pattern stack and the second substrate.

13. The display device according to claim 12, further comprising: a camera area, the camera area being adjacent to the sensor area; as well as A second transparent resin, wherein the second transparent resin overlaps the camera area and is between the first substrate and the second substrate.

14. The display device according to claim 13, wherein: The second transparent resin overlapping the camera area is thicker than the first transparent resin overlapping the sensor area.

15. A display device, comprising: a substrate comprising a first region and a second region spaced apart from the first region; a plurality of sub-pixels, the plurality of sub-pixels being in the first region and not in the second region; a color filter overlapping the plurality of sub-pixels in the first region; as well as A color pattern stack overlaps the second region, the color pattern stack including a first color pattern having a first color and a second color pattern on the first color pattern and having a second color different from the first color.

16. The display device according to claim 15, wherein: The color filter includes a first color filter having a first color, a second color filter having a second color different from the first color, and a third color filter having a third color different from the first color and the second color, The first color of the first color pattern is the same as the first color of the first color filter, and the second color of the second color pattern is the same as the second color of the second color filter.

17. The display device according to claim 16, wherein: The first color pattern has a first thickness, and the second color pattern has a second thickness different from the first thickness.

18. The display device according to claim 17, wherein: The color pattern stack also includes: a third color pattern on at least one of the first color pattern or the second color pattern, the third color pattern having a different color from the first color pattern and the second color pattern.

19. The display device according to claim 18, wherein: The first color pattern has the same thickness as the first color filter, the second color pattern has the same thickness as the second color filter, and the third color pattern has the same thickness as the third color filter.

20. The display device according to claim 15, further comprising: A sensor overlaps the second area and does not overlap the first area.

Images