Light emitting display device

Abstract

The light-emitting display device according to the present invention includes: a display panel comprising a first pixel group and a second pixel group, the first pixel group being composed of a plurality of pixels arranged in 2N rows, and the second pixel group being arranged immediately adjacent to the first pixel group and composed of a plurality of pixels arranged in 2N rows; and a signal emission unit comprising a first emission stage for applying the same first emission signal to the first pixel group and a second emission stage for applying the same second emission signal to the second pixel group, wherein, in a first frame, the fall time of each of the first emission signals is different from the rise time of each of the second emission signals.

Description

Technical Field

[0001] The present invention relates to a light-emitting display device, and more particularly, to a light-emitting display device capable of preventing the boundaries between pixel groups from becoming visible when driving the units of a pixel group. Background Technology

[0002] Currently, with the advent of the information age, the field of display devices that visually express electrical information signals has developed rapidly, and research is ongoing to improve the performance of various display devices, such as thinness, light weight, and low power consumption.

[0003] Among various display devices, light-emitting displays are self-emissive displays. Unlike liquid crystal displays, light-emitting displays do not require a separate light source, allowing them to be manufactured in a lightweight and thin manner. Furthermore, because light-emitting displays offer advantages in power consumption due to their low-voltage operation, and also excel in color reproduction, response speed, viewing angle, and contrast ratio (CR), they are expected to be utilized in various fields. Summary of the Invention

[0004] [Technical Issues]

[0005] A light-emitting display device can be driven in such a way that pixels emit light row by row in response to a scan signal applied row by row. However, recently, in order to achieve efficiency and high brightness of the light-emitting element, a driving method has also been used in which all pixels are grouped into a specific number of row units and emit light simultaneously on a pixel group basis.

[0006] However, the inventors of this invention have recognized a problem: when using a driving method that allows pixels to emit light simultaneously in pixel groups, dark or bright lines at the boundaries between pixel groups are visible to the user. Specifically, even if the fall and rise times of the emitted signals from adjacent pixel groups are the same, when the emitted signal lines and high-potential voltage lines intersect each other, ripple may occur in the high-potential voltage transmitted by the high-potential voltage lines due to the fall or rise of the emitted signal transmitted by the emitted signal lines. Due to this high-potential voltage ripple phenomenon, dark or bright lines can be visible at the boundaries between pixel groups.

[0007] Therefore, the inventors of this invention have invented a new light-emitting display device that can prevent the boundaries between pixel groups from becoming visible when driving the units of a pixel group.

[0008] One object of the present invention is to provide a light-emitting display device that can solve the problem of dark or bright lines being visible at the boundaries between pixel groups when driving the units of a pixel group.

[0009] Another object of the present invention is to provide a light-emitting display device that, when using a display panel configured to drive pixels arranged in odd-numbered rows or pixels arranged in even-numbered rows, can prevent brightness deviations at the boundaries of pixel groups.

[0010] The purpose of this disclosure is not limited to the above-mentioned purposes, and other purposes not mentioned above will be clearly understood by those skilled in the art from the following description.

[0011] [Technical Solution]

[0012] A light-emitting display device according to an embodiment of the present invention includes: a display panel including a first pixel group and a second pixel group, the first pixel group including a plurality of pixels in 2N rows, the second pixel group being disposed after the first pixel group and including a plurality of pixels in 2N rows; and a transmission signal unit including a first transmission stage for applying the same first transmission signal to the first pixel group and a second transmission stage for applying the same second transmission signal to the second pixel group, wherein, in a first frame, the fall time of the first transmission signal and the rise time of the second transmission signal are different from each other, wherein the fall time of the first transmission signal is the time when the first transmission signal reverses from a high voltage to a low voltage, and wherein the rise time of the second transmission signal is the time when the second transmission signal reverses from a low voltage to a high voltage.

[0013] A light-emitting display device according to another embodiment of the present invention includes: a display panel including a plurality of pixel groups, wherein the plurality of pixels are grouped in a plurality of rows, the display panel being configured to drive pixels in odd-numbered rows or pixels in even-numbered rows; and a gate driver including a scan signal unit for applying scan signals to the plurality of pixels and a transmit signal unit for applying transmit signals to the plurality of pixels, wherein the transmit signal unit is configured to apply the same transmit signal to pixels included in the same pixel group among the plurality of pixels, wherein, in a first frame and a second frame, the time at which the first transmit signal applied to the first pixel group among the plurality of pixel groups reverses from a gate cutoff voltage to a gate on voltage is different from the time at which the second transmit signal applied to the second pixel group among the plurality of pixel groups reverses from a gate on voltage to a gate cutoff voltage, such that the display panel is configured to alternately display a first frame with visible dark lines and a second frame with visible bright lines at the boundaries between the plurality of pixel groups.

[0014] Further details of the exemplary embodiments are included in the detailed embodiments and the accompanying drawings.

[0015] [Beneficial Effects]

[0016] According to the present invention, when multiple pixels are driven in groups, the brightness deviation that may occur at the boundaries of pixel groups can be improved.

[0017] In addition, according to the present invention, the phenomenon of dark or bright lines at the boundaries between pixel groups being visible to the user can be prevented.

[0018] The effects of the invention are not limited to those illustrated above, and many more effects are included in the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a light-emitting display device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the display panel of a light-emitting display device according to an embodiment of the present invention.

[0021] Figure 3 This is a circuit diagram of the pixel circuit of a pixel in a light-emitting display device according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of a gate driver for a light-emitting display device according to an embodiment of the present invention.

[0023] Figure 5 This is a timing diagram of the emission signals of a light-emitting display device according to an embodiment of the present invention.

[0024] Figure 6a This is a timing diagram from a comparison example.

[0025] Figure 6b This is a frame in the comparison example when driving the pixels of the odd-numbered rows.

[0026] Figure 6c This is a frame diagram in the comparison example when driving pixels in even-numbered rows.

[0027] Figure 7a This is a timing diagram of the first frame of a light-emitting display device according to an embodiment of the present invention.

[0028] Figure 7b This is a diagram of the first frame when the pixels of the odd-numbered rows of the light-emitting display device according to an embodiment of the present invention are driven.

[0029] Figure 7c This is a diagram of the first frame when the even-numbered rows of pixels of the light-emitting display device according to an embodiment of the present invention are driven.

[0030] Figure 8a This is a timing diagram of the second frame of a light-emitting display device according to an embodiment of the present invention.

[0031] Figure 8b This is a diagram of the second frame when the pixels of the odd-numbered rows of the light-emitting display device according to an embodiment of the present invention are driven.

[0032] Figure 8c This is a diagram of the second frame when the even-numbered rows of pixels of the light-emitting display device according to an embodiment of the present invention are driven.

[0033] Figure 9a This is a timing diagram of the third frame of a light-emitting display device according to another embodiment of the present invention.

[0034] Figure 9b This is a diagram of the third frame when the pixels of the odd-numbered rows of the light-emitting display device according to another embodiment of the present invention are driven.

[0035] Figure 10a This is a timing diagram of the third frame of a light-emitting display device according to yet another embodiment of the present invention.

[0036] Figure 10b This is a diagram of the third frame when the even-numbered rows of pixels of the light-emitting display device according to another embodiment of the present invention are driven. Detailed Implementation

[0037] The advantages and features of this disclosure, as well as methods for achieving these advantages and features, will become clear from the exemplary embodiments described in detail below with reference to the accompanying drawings. However, this disclosure is not limited to the exemplary embodiments disclosed herein, but will be implemented in various forms. These exemplary embodiments are provided by way of example only so that those skilled in the art can fully understand the disclosure and scope of this disclosure. Therefore, this disclosure will be limited only by the scope of the appended claims.

[0038] The shapes, dimensions, ratios, angles, numbers, etc., shown in the accompanying drawings to describe exemplary embodiments of this disclosure are merely examples, and this disclosure is not limited thereto. Throughout the specification, the same reference numerals generally denote the same elements. Furthermore, in the following description of this disclosure, detailed descriptions of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of this disclosure. Terms such as “comprising,” “having,” and “consisting of” as used herein are generally intended to allow for the addition of additional components, unless these terms are used in conjunction with the term “only.” Unless otherwise expressly stated, any reference to the singular may include the plural.

[0039] Even without explicit explanation, components are interpreted as including the normal tolerance range.

[0040] When using terms such as “on top of,” “above,” “below,” and “adjacent” to describe the positional relationship between two parts, one or more parts may be located between the two parts, unless these terms are used in conjunction with the terms “immediately adjacent” or “directly.”

[0041] When a component or layer is referred to as being "on" another component or layer, it can be directly on the other component or layer, or there can be an intervening component or layer.

[0042] Although the terms "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Therefore, the first component mentioned below can be the second component in the technical concept of this invention.

[0043] Throughout the instruction manual, the same reference numerals denote the same elements.

[0044] Since the dimensions and thicknesses of each component shown in the accompanying drawings are for illustrative purposes, the invention is not necessarily limited to the dimensions and thicknesses shown for the components.

[0045] Features of the various embodiments of this disclosure may be partially or wholly dependent on or combined with each other, and may be technically interlocked and operated in various ways, and the embodiments may be performed independently or in association with each other.

[0046] In the following, a display device according to an exemplary embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0047] Figure 1 This is a schematic diagram of a light-emitting display device according to an embodiment of the present invention. (Refer to...) Figure 1 The light-emitting display device includes a display panel 110, a data driver 120, a gate driver 130, and a timing controller 140.

[0048] Reference Figure 1 The display panel 110 is a panel used to display images. The display panel 110 may include various circuits, lines, and light-emitting elements disposed on a substrate. The display panel 110 is divided by multiple intersecting data lines DL and multiple scan lines SL, and may include multiple pixels PX connected to the multiple data lines DL and multiple scan lines SL. The display panel 110 may include a display area defined by the multiple pixels PX and a non-display area forming various signal lines or pads, etc. The display panel 110 can be implemented as a display panel used in various light-emitting display devices, such as liquid crystal displays, organic light-emitting displays, electrophoretic displays, and inorganic light-emitting displays using LEDs. Hereinafter, the display panel 110 will be described as a panel used in an inorganic light-emitting display device using LEDs, but it is not limited thereto.

[0049] The timing controller 140 can receive timing signals such as vertical sync signals, horizontal sync signals, data enable signals, dot clocks, etc., as well as digital video data RGB, through a receiving circuit (e.g., an LVDS or TMDS interface) connected to the host system. The timing controller 140 can provide a data control signal DDC to the data driver 120 and a gate control signal GDC to the gate driver 130 based on the timing signals input to it. Furthermore, the timing controller 140 can rearrange the digital video data RGB according to the resolution of the display panel 110 and provide the rearranged digital video data RGB' to the data driver 120.

[0050] Data driver 120 supplies data voltage VDATA to multiple sub-pixels SP. Data driver 120 may include multiple source driver integrated circuits (ICs). The multiple source driver ICs can receive digital video data RGB' and data control signal DDC from timing controller 140. The multiple source driver ICs can generate data voltage VDATA by converting digital video data RGB' into gamma voltage in response to data control signal DDC, and supply data voltage VDATA through data line DL of display panel 110. In addition, various voltages used to drive multiple pixels PX, such as high potential voltage VDD, low potential voltage VSS, reference voltage VREF, etc., can be transmitted through data driver 120 and can be transmitted through other components. The multiple source driver ICs can be connected to data line DL of display panel 110 through chip-on-glass (COG) process or tape-on-board (TAB) process. Furthermore, the source driver ICs can be formed on display panel 110, or they can be formed on a separate PCB substrate and connected to display panel 110.

[0051] Gate driver 130 supplies scan signals SCAN1 and SCNA2 and transmit signal EM to multiple pixels PX. Gate driver 130 may include a level shifter and a shift register. The level shifter shifts the clock signal level, which is a transistor-transistor-logic (TTL) level input from timing controller 140, and then supplies the shifted level to the shift register. The shift register may be formed in the non-display area of ​​display panel 110 using a GIP method, but is not limited thereto. The shift register may consist of multiple stages that shift and output scan signals SCAN1 and SCNA2 and transmit signal EM in response to clock and drive signals. The multiple stages included in the shift register may sequentially output scan signals SCAN1 and SCNA2 and transmit signal EM through multiple output terminals. Although in Figure 1 The diagram shows the gate driver 130 outputting two scan signals SCAN1 and SCNA2, as well as a transmit signal EM, but the number of scan signals SCAN1 and SCNA2 is not limited to this.

[0052] They will be referred to together in the following text. Figure 2 This is to provide a more detailed description of the multiple pixels PX of the display panel 110.

[0053] Figure 2 This is a schematic diagram of the display panel of a light-emitting display device according to an embodiment of the present invention. Figure 2 For ease of explanation, only a plurality of pixels PX of the display panel 110 are shown in the image.

[0054] Reference Figure 2 The display panel 110 may include multiple pixels (PX). These multiple pixels (PX) may be pixels used to emit different colors, and multiple LEDs may be disposed therein. For example, the multiple pixels (PX) may include red pixels, green pixels, and blue pixels, but are not limited to this.

[0055] Multiple pixels PX can be grouped into multiple pixel groups PG. That is, multiple pixels PX can be grouped into multiple row units to configure multiple pixel groups PG. Each pixel group PG can be composed of multiple pixels PX in 2N rows (i.e., multiple pixels PX in an even-numbered row). The multiple pixel groups PG can be composed of, for example, N pixel groups PG. In this case, it can be assumed that the first pixel group PG1 is located at the top of the display panel 110, and the Nth pixel group PGN is located at the bottom of the display panel 110, and the second pixel group PG2 can be defined to be located after the first pixel group PG1.

[0056] The display panel 110 can be configured to drive either odd-numbered rows of pixels PX or even-numbered rows of pixels PX in a plurality of pixels PX. That is, the display panel 110 can selectively drive either odd-numbered rows or even-numbered rows of pixels PX arranged in the same column. Furthermore, for example, as described above, when the light-emitting display device 100 is an inorganic light-emitting display device 100 using LEDs, in order to cope with LED transfer failures, odd-numbered rows of pixels PX can be defined as primary pixels, while even-numbered rows of pixels PX can be defined as redundant pixels. That is, when there is no defect in the primary pixels, the primary pixels (i.e., odd-numbered rows of pixels PX) can be driven when driving the light-emitting display device 100, and when there is a defect in the primary pixels, redundant pixels (i.e., even-numbered rows of pixels PX) can be driven when driving the light-emitting display device 100. However, this is exemplary, and the display panel 110 can selectively drive either odd-numbered rows or even-numbered rows of pixels PX arranged in the same column for various purposes depending on the design of the display panel 110.

[0057] They will be referred to together in the following text. Figure 3To provide a more detailed description of the pixel circuitry disposed in the plurality of pixel PXs of the display panel 110.

[0058] Figure 3 This is a circuit diagram of the pixel circuit of a pixel in a light-emitting display device according to an embodiment of the present invention. Although Figure 3 The diagram shows a 6T1C pixel circuit structure consisting of six transistors and one capacitor, which is exemplary, and the number of transistors and capacitors constituting the pixel circuit is not limited thereto.

[0059] Reference Figure 3 A pixel circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a driving transistor DT, a storage capacitor CST, and a light-emitting element LED.

[0060] The light-emitting element (LED) emits light through a drive current supplied from the driving transistor DT. The anode of the LED is connected to the fourth node N4, and the cathode of the LED is connected to the input of the low-potential voltage VSS.

[0061] The driving transistor DT controls the driving current applied to the light-emitting element LED based on the voltage Vsg between its source and gate electrodes. The source electrode of the driving transistor DT is connected to the input terminal of the high potential voltage VDD, the gate electrode of the driving transistor DT is connected to the second node N2, and the drain electrode of the driving transistor DT is connected to the third node N3.

[0062] The first transistor T1 includes a gate electrode connected to the input terminal of the first scan signal SCAN1, a source electrode connected to the data line DL supplying the data voltage VDATA, and a drain electrode connected to the first node N1. The first transistor T1 can apply the data voltage VDATA supplied from the data line DL to the first node N1 in response to the first scan signal SCAN1.

[0063] The second transistor T2 includes a source electrode connected to the third node N3, a drain electrode connected to the second node N2, and a gate electrode connected to the input terminal of the first scan signal SCAN1. The second transistor T2 can, in response to the first scan signal SCAN1, diode-connect the gate and drain electrodes of the driving transistor DT.

[0064] The third transistor T3 includes a gate electrode connected to the input terminal of the transmit signal EM, a source electrode connected to the first node N1, and a drain electrode connected to the input terminal of the reference voltage VREF. The third transistor T3 can apply the reference voltage VREF to the first node N1 in response to the transmit signal EM.

[0065] The fourth transistor T4 includes a source electrode connected to the third node N3, a drain electrode connected to the fourth node N4, and a gate electrode connected to the input terminal of the transmit signal EM. The fourth transistor T4 forms a current path between the third node N3 and the fourth node N4 in response to the transmit signal EM.

[0066] The fifth transistor T5 includes a drain electrode connected to the fourth node N4, a source electrode connected to the input of the reference voltage VREF, and a gate electrode connected to the input of the second scan signal SCAN2. The fifth transistor T5 can apply the reference voltage VREF to the fourth node N4 in response to the second scan signal SCAN2.

[0067] The storage capacitor CST includes a first electrode connected to a first node N1 and a second electrode connected to a second node N2.

[0068] In the light-emitting display device 100, a frame period can be divided into an initial period, a sampling period, and an emission period. The initial period is the period in which the gate voltage of the driving transistor DT is activated. The sampling period is the period in which the voltage of the anode of the light-emitting element LED is initialized and the threshold voltage of the driving transistor DT is sampled and stored in the second node N2. The emission period is the period in which the voltage between the source electrode and the gate electrode of the driving transistor DT (including the sampled threshold voltage) is programmed, and the light-emitting element LED emits light using a driving current according to the programmed voltage.

[0069] Here, during the emission period, the emission signal EM is inverted to the gate on-state voltage. That is, the emission signal EM falls within the gate on-state voltage. Therefore, the fourth transistor T4 is turned on by the emission signal EM, and the drive current for driving the light-emitting element LED is applied to the LED via the fourth node N4. Therefore, the light-emitting element LED can emit light during the emission period. In this specification, although it is described that the gate on-state voltage is a gate low voltage and the gate off-state voltage is a gate high voltage, depending on the type of transistor, the gate on-state voltage can be a gate high voltage and the gate off-state voltage can be a gate low voltage.

[0070] In the light-emitting display device 100 according to an embodiment of the present invention, multiple pixels PX are driven in units of pixel groups PG. That is, emission signals EM of the same timing are applied to the pixels PX included in the same pixel group PG. This will refer to Figure 4 and Figure 5 To describe in more detail.

[0071] Figure 4 This is a schematic diagram of a gate driver for a light-emitting display device according to an embodiment of the present invention. Figure 5 This is a timing diagram of the emission signals of a light-emitting display device according to an embodiment of the present invention.

[0072] Reference Figure 4 The gate driver 130 includes a scan signal unit SD and a transmit signal unit ED.

[0073] The scan signal unit SD applies a scan signal SCAN to multiple pixels PX. The scan signal unit SD may include multiple scan levels for outputting the scan signal SCAN. The multiple scan levels may include multiple first scan levels SD1 configured to output a first scan signal SCAN1 and multiple second scan levels SD2 configured to output a second scan signal SCAN2. Each of the multiple first scan levels SD1 may output one line of the first scan signal SCAN1, and each of the multiple second scan levels SD2 may output one line of the second scan signal SCAN2. Therefore, a pair of first scan levels SD1 and second scan levels SD2 can output one line of the first scan signal SCAN1 and the second scan signal SCAN2.

[0074] The transmitting signal unit ED applies a transmitting signal EM to multiple pixels PX. The transmitting signal unit ED may include multiple transmitting stages for outputting the transmitting signal EM to each pixel group PG. Specifically, the multiple transmitting stages may include: a first transmitting stage ED1 configured to output a first transmitting signal EM1 to the multiple pixels PX included in the first pixel group PG1; a second transmitting stage ED2 configured to output a second transmitting signal EM2 to the multiple pixels PX included in the second pixel group PG2; and may include an Nth transmitting stage EDN configured to output a Nth transmitting signal EMN to the multiple pixels PX included in the Nth pixel group PGN. That is, the transmitting signal unit ED can output a total of N transmitting signals EM1, EM2, ..., EMN.

[0075] The emission signal unit ED, which includes multiple emission stages, can apply the same emission signal EM to pixels PX included in the same pixel group PG among multiple pixels PX. That is, the first emission signal EM1 can be applied equally to the pixels PX included in the first pixel group PG1 through the first emission stage ED1, and the second emission signal EM2 can be applied equally to the pixels PX included in the second pixel group PG2 through the second emission stage ED2.

[0076] Refer to together Figure 5To describe the emission signal EM output by the emission signal unit ED in more detail, when pixels PX of the first pixel group PG1 are subjected to the same first emission signal EM1 by the first emission stage ED1, they can emit light together during the period when the first emission signal EM1 is a gate on voltage. Next, when pixels PX of the second pixel group PG2 are subjected to the same second emission signal EM2 by the second emission stage ED2, they can emit light together during the period when the second emission signal EM2 is a gate on voltage. Furthermore, since the second emission signal EM2 is delayed by a predetermined time compared to the first emission signal EM1, pixels PX of the second pixel group PG2 can emit light with a predetermined delay compared to pixels PX of the first pixel group PG1. Next, when pixels PX of the third pixel group PG3 are subjected to the same third emission signal EM3 by the third emission stage, they can emit light together during the period when the third emission signal EM3 is a gate on voltage. Furthermore, since the third transmission signal EM3 is delayed by a predetermined time compared to the second transmission signal EM2, the pixel PX of the third pixel group PG3 can emit light with a predetermined delay compared to the pixel PX of the second pixel group PG2.

[0077] As described above, when the transmitting signal unit ED emits light in groups of multiple pixel groups PG, brightness deviations may occur at the boundaries between pixel groups PG. This will refer to... Figures 6a to 6c To describe in more detail.

[0078] Figure 6a This is a timing diagram from a comparison example. Figure 6b This is a frame of a graph when driving the pixels in the odd-numbered rows in the comparison example. Figure 6c This is a frame of a graph when the even-numbered rows of pixels are driven in the comparison example. Figure 6a This is a timing diagram of the transmission signals EM1 and EM2, data voltage VDATA, and high-potential voltage VDD for the last two rows of the first pixel group PG1 (consisting of 2N rows) and the first two rows of the second pixel group PG2 in the comparative example. Figure 6b and Figure 6c This is a diagram showing the state of a frame displaying a color expressing a specific grayscale, where dark lines are shown in black and bright lines in white. The following description is a description of a comparative example; however, for ease of explanation, there are parts that use the same reference numerals as those used in the drawing reference numerals of the light-emitting display device 100 according to an embodiment of the present invention.

[0079] In the case of a general light-emitting display device, such as the comparative example, Figure 6aAs shown, the time it takes for the first transmit signal EM1 to reverse from a gate cutoff signal to a gate on signal (i.e., the fall time of the first transmit signal EM1 from a high voltage to a low voltage) can be the same as the time it takes for the second transmit signal EM2 to reverse from a gate on signal to a gate cutoff signal (i.e., the rise time of the second transmit signal EM2 from a low voltage to a high voltage). That is, both the fall time of the first transmit signal EM1 and the rise time of the second transmit signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2.

[0080] In this way, when the fall time of the first transmitted signal EM1 and the rise time of the second transmitted signal EM2 are the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2, ripple may appear in the high potential voltage VDD at the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Multiple transmitted signal lines that connect the transmitted signal unit ED to multiple pixels PX and transmit the transmitted signal EM from the transmitted signal unit ED to multiple pixels PX can generally extend in the same direction as the scan line SL, and multiple high potential voltage lines that apply the high potential voltage VDD to multiple pixels PX can generally extend in the same direction as the data line DL. Therefore, multiple transmitted signal lines and multiple high potential voltage lines overlap and cross each other. Since the transmitted signal lines and high potential voltage lines cross each other as described above, when the transmitted signal EM transmitted through the transmitted signal lines is reversed, ripple may appear in the high potential voltage VDD transmitted through the high potential voltage lines that cross the transmitted signal lines. Therefore, as Figure 6a As shown, at the beginning of the data signal application time period for the first row PG2(1) of the second pixel group PG2, ripple may appear in the high potential voltage VDD. At this beginning time, the first transmission signal EM1 decreases while the second transmission signal EM2 increases. Therefore, in Figure 6c The diagram illustrates the case where even-numbered rows of pixels PX are driven in a light-emitting display device according to a comparative example. Dark or bright lines may not be visible to the user, but... Figure 6b The image shows the case where pixels PX drive odd-numbered rows; the dark lines may be visible to the user.

[0081] Therefore, the inventors of this invention have invented a novel light-emitting display device capable of preventing the boundaries between pixel groups PG from becoming visible when driving the units of a pixel group PG. (See also...) Figures 7a to 7c In order to provide a more detailed description of the light-emitting display device 100 according to an embodiment of the present invention.

[0082] Figure 7aThis is a timing diagram of the first frame of a light-emitting display device according to an embodiment of the present invention. Figure 7b This is a diagram of the first frame when the pixels of the odd-numbered rows of the light-emitting display device according to an embodiment of the present invention are driven. Figure 7c This is a diagram of the first frame when the even-numbered rows of pixels of the light-emitting display device according to an embodiment of the present invention are driven. Figure 7a It is a timing diagram of the transmission signals EM1 and EM2, data voltage VDATA and high potential voltage VDD for the last two rows of the first pixel group PG1 and the first two rows of the second pixel group PG2, which is the pixel group PG immediately following the first pixel group PG1. This timing diagram is related to the time of the first frame expressed by the light-emitting display device 100 according to an embodiment of the present invention. Figure 7b and Figure 7c It is a diagram showing the state of a frame displaying colors that express a specific grayscale, where dark lines are shown in black and bright lines are shown in white.

[0083] In the light-emitting display device 100 according to an embodiment of the present invention, in order to prevent the boundaries between pixel groups PG from becoming visible when driving the units of pixel groups PG, the fall time and rise time of the emission signals EM of adjacent pixel groups PG can be different from each other. Furthermore, in the light-emitting display device 100 according to an embodiment of the present invention, multiple frames with different fall times and rise times of the emission signals EM can be displayed alternately. For example, the display panel 110 can be configured to alternately display one frame where dark lines are visible and another frame where bright lines are visible at the boundaries between multiple pixel groups PG. That is, the fall time of the first emission signal EM1 applied to the first pixel group PG1 in one frame can be different from the fall time of the first emission signal EM1 applied to the first pixel group PG1 in another frame. Additionally, the rise time of the second emission signal EM2 applied to the second pixel group PG2, which is a pixel group PG immediately following the first pixel group PG1, in one frame can be different from the rise time of the second emission signal EM2 applied to the second pixel group PG2 in another frame.

[0084] Reference Figure 7a To provide a more detailed description, in the first frame, the fall time of the first transmitted signal EM1 may differ from the rise time of the second transmitted signal EM2. In this case, in the first frame, the fall time of the first transmitted signal EM1 may be slower than the rise time of the second transmitted signal EM2. Specifically, in the first frame, the fall time of the first transmitted signal EM1 may be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2, and in the first frame, the rise time of the second transmitted signal EM2 may be the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1. Figure 7aFor ease of explanation, the description is based on the first emission signal EM1 applied to the first pixel group PG1 and the second emission signal EM2 applied to the second pixel group PG2. However, the fall time and rise time of the emission signal EM as described above can be applied to the emission signal EM applied to two adjacent pixel groups PG.

[0085] Since the transmitting signal unit ED applies a first transmitting signal EM1 and a second transmitting signal EM2 with the falling time and rising time as described above, the dark or bright line is visible to the user in the first frame.

[0086] First, refer to Figure 7b When driving the odd-numbered rows of pixels PX of the light-emitting display device 100, dark lines can be visible at the boundaries between adjacent pixel groups PG. (See reference...) Figure 7a In the first frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Therefore, due to the fall of the first transmitted signal EM1, ripple may occur in the high potential voltage VDD transmitted through the high potential voltage line overlapping with the transmitted signal line, and the high potential voltage VDD may have a momentary low value due to the ripple. Therefore, the relatively low high potential voltage VDD can be applied to the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2, that is, the position corresponding to the first row PG2(1) of the second pixel group PG2. Therefore, the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2 has a brightness that is lower than the brightness of its surroundings, which can be seen by the user as a dark line.

[0087] Next, refer to Figure 7c When the even-numbered rows of pixels PX in the light-emitting display device 100 are driven, bright lines become visible at the boundaries between adjacent pixel groups PG. (Refer to...) Figure 7a In the first frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1. Therefore, due to the rise of the second transmitted signal EM2, ripple may occur in the high-potential voltage VDD transmitted through the high-potential voltage line overlapping with the transmitted signal line, and the high-potential voltage VDD may have a momentary high value due to the ripple. Therefore, a relatively high high-potential voltage VDD can be applied to the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2, i.e., the position corresponding to the last row PG1(2N) of the first pixel group PG1. Therefore, the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2 has a brightness increased compared to its surroundings, which can be visible to the user as a bright line.

[0088] Figure 8a This is a timing diagram of the second frame of a light-emitting display device according to an embodiment of the present invention. Figure 8b This is a diagram of the second frame when the pixels of the odd-numbered rows of the light-emitting display device according to an embodiment of the present invention are driven. Figure 8c This is a diagram of the second frame when the even-numbered rows of pixels of the light-emitting display device according to an embodiment of the present invention are driven. Figure 8a It is a timing diagram of the transmission signals EM1 and EM2, data voltage VDATA and high potential voltage VDD for the last two rows of the first pixel group PG1 and the first two rows of the second pixel group PG2, which is the pixel group PG immediately following the first pixel group PG1. This timing diagram is related to the time of the second frame expressed by the light-emitting display device 100 according to an embodiment of the present invention. Figure 8b and Figure 8c It is a diagram showing the state of a frame displaying colors that express a specific grayscale, where dark lines are shown in black and bright lines are shown in white.

[0089] Reference Figure 8a In the second frame, the fall time of the first transmitted signal EM1 can be different from the rise time of the second transmitted signal EM2. In this case, in the second frame, the fall time of the first transmitted signal EM1 can be slower than the rise time of the second transmitted signal EM2. Specifically, in the second frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2, and in the second frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Figure 8a For ease of explanation, the description is based on the first emission signal EM1 applied to the first pixel group PG1 and the second emission signal EM2 applied to the second pixel group PG2. However, the fall time and rise time of the emission signal EM can both be applied to the emission signal EM applied to two adjacent pixel groups PG.

[0090] Since the transmitting signal unit ED applies a first transmitting signal EM1 and a second transmitting signal EM2 with the falling time and rising time as described above, the dark or bright line can be visible to the user in the second frame.

[0091] First, refer to Figure 8b When the odd-numbered rows of pixels PX of the light-emitting display device 100 are driven, bright lines can be seen at the boundaries between adjacent pixel groups PG. (See reference...) Figure 8aIn the second frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Therefore, due to the rise of the second transmitted signal EM2, ripple may occur in the high potential voltage VDD transmitted through the high potential voltage line overlapping with the transmitted signal line, and the high potential voltage VDD may have a momentary high value due to the ripple. Therefore, the relatively high high potential voltage VDD can be applied to the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2, that is, the position corresponding to the first row PG2(1) of the second pixel group PG2. Therefore, the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2 has a brightness that is increased compared to the brightness of its surroundings, which can be seen by the user as a bright line.

[0092] Next, refer to Figure 8c When the even-numbered rows of pixels PX, which are redundant pixels of the light-emitting display device 100, are driven, dark lines can be seen at the boundaries between adjacent pixel groups PG. (See reference...) Figure 8a In the second frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2. Therefore, due to the fall of the first transmitted signal EM1, ripple may occur in the high potential voltage VDD transmitted through the high potential voltage line overlapping with the transmitted signal line, and the high potential voltage VDD may have a momentary low value due to the ripple. Therefore, when driving the even-numbered row of pixels PX, since the position corresponding to the second row PG2(2) of the second pixel group PG2 corresponds to the boundary between the first pixel group PG1 and the second pixel group PG2, a relatively low high potential voltage VDD can be applied to the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2. Therefore, the position corresponding to the boundary between the first pixel group PG1 and the second pixel group PG2 has a brightness lower than the brightness of its surroundings, which can be seen by the user as a dark line.

[0093] In the light-emitting display device 100 according to an embodiment of the present invention, in order to prevent the boundaries between pixel groups PG from becoming visible when driving the units of pixel groups PG, the fall time and rise time of the emission signal EM of adjacent pixel groups PG can be different from each other. Furthermore, in the light-emitting display device 100 according to an embodiment of the present invention, multiple frames with different fall and rise times of the emission signal EM can be displayed alternately. For example, the display panel 110 can be configured to alternately display a frame where dark lines are visible and another frame where bright lines are visible at the boundaries between multiple pixel groups PG.

[0094] First, when the light-emitting display device 100 drives the odd-numbered rows of pixels PX, the first emission stage ED1 of the emission signal unit ED can apply a first emission signal EM1, such that the fall time of the first emission signal EM1 in the first frame is the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2, and the first emission stage ED1 of the emission signal unit ED can apply the first emission signal EM1, such that the fall time of the first emission signal EM1 in the second frame is the same as the start time of the data signal application period of the second row PG(2) of the second pixel group PG2. Additionally, the second emission stage ED2 of the emission signal unit ED can apply a second emission signal EM2, such that the rise time of the second emission signal EM2 in the first frame is the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1, and the second emission stage ED2 of the emission signal unit ED can apply the second emission signal EM2, such that the rise time of the second emission signal EM2 in the second frame is the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Furthermore, the first transmitting stage ED1 and the second transmitting stage ED2 of the transmitting signal unit ED can apply a first transmitting signal EM1 and a second transmitting signal EM2 to alternately drive the first frame and the second frame. Therefore, when the light-emitting display device 100 drives the odd-numbered rows of pixels PX, it can alternately display the first frame as a frame where dark lines are visible and the second frame as a frame where bright lines are visible. In this case, the first frame and the second frame are respectively frames where dark lines are visible and frames where bright lines are visible, but the dark lines and bright lines are alternately displayed for a very short time at the boundary between adjacent pixel groups PG, resulting in the effect of dark lines and bright lines canceling each other out. Therefore, the dark lines and bright lines at the boundary between adjacent pixel groups PG can be invisible to the user.

[0095] Furthermore, when the light-emitting display device 100 drives the even-numbered rows of pixels PX, the first emission stage ED1 of the emission signal unit ED can apply a first emission signal EM1, such that the fall time of the first emission signal EM1 in the first frame is the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2, and the first emission stage ED1 of the emission signal unit ED can apply a first emission signal EM1, such that the fall time of the first emission signal EM1 in the second frame is the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Additionally, the second emission stage ED2 of the emission signal unit ED can apply a second emission signal EM2, such that the rise time of the second emission signal EM2 in the first frame is the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG1, and the second emission stage ED2 of the emission signal unit ED can apply a second emission signal EM2, such that the rise time of the second emission signal EM2 in the second frame is the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1. Furthermore, the first transmitting stage ED1 and the second transmitting stage ED2 of the transmitting signal unit ED can apply a first transmitting signal EM1 and a second transmitting signal EM2 to alternately drive the first frame and the second frame. Therefore, when the light-emitting display device 100 drives the even-numbered rows of pixels PX, it can alternately display the first frame as a frame where dark lines are visible and the second frame as a frame where bright lines are visible. In this case, the first frame and the second frame are respectively frames where dark lines are visible and frames where bright lines are visible, but the dark lines and bright lines are alternately displayed for a very short time at the boundary between adjacent pixel groups PG, resulting in the effect of dark lines and bright lines canceling each other out. Therefore, the dark lines and bright lines at the boundary between adjacent pixel groups PG can be invisible to the user. Meanwhile, in Figures 7a to 8c In this context, it is assumed that when driving even-numbered rows of pixels PX, the first frame is a frame where bright lines are visible and the second frame is a frame where dark lines are visible. However, this is for ease of explanation, and as described in this paragraph, the frame where dark lines are visible can be defined as the first frame, and the frame where bright lines are visible can be defined as the second frame.

[0096] As described above, the display panel 110 of the light-emitting display device 100 according to an embodiment of the present invention can be configured to alternately display one frame where dark lines are visible and another frame where bright lines are visible. Therefore, in the light-emitting display device 100 according to an embodiment of the present invention, the brightness deviation that occurs when the display panel 110 is implemented such that multiple pixels PX are grouped to emit light in units of pixel groups PG can be improved. Ripple may occur in the high-potential voltage lines overlapping with the emission signal lines during the rise or fall of the emission signal EM, thus causing dark or bright lines to appear at the boundaries of adjacent pixel groups PG, which are visible to the user. Therefore, the light-emitting display device 100 according to an embodiment of the present invention can be configured to alternately display one frame where dark lines are visible and another frame where bright lines are visible, thus allowing dark and bright lines to cancel each other out. Therefore, the actual dark and bright lines may be invisible to the user, and the brightness deviation that occurs at the boundaries of pixel groups PG when multiple pixels PX are driven in units of groups can be improved.

[0097] Figure 9a This is a timing diagram of the third frame of a light-emitting display device according to another embodiment of the present invention. Figure 9b This is a diagram of the third frame when the pixels of the odd-numbered rows of the light-emitting display device according to another embodiment of the present invention are driven. Figure 9a It is a timing diagram of the transmission signals EM1 and EM2, data voltage VDATA and high potential voltage VDD for the last two rows of the first pixel group PG1 and the first two rows of the second pixel group PG2, which is the pixel group PG immediately following the first pixel group PG1. This timing diagram is related to the time of the second frame expressed by the light-emitting display device according to another embodiment of the present invention. Figure 9b This is a diagram showing the state of frames displaying colors representing specific grayscale levels, where dark lines are shown in black and bright lines in white. (See reference...) Figures 9a to 9b The light-emitting display device described in another embodiment of the present invention and the reference Figures 1 to 8c The only difference between the light-emitting display device 100 described according to an embodiment of the present invention is that it drives the odd-numbered rows of pixels PX and the display panel 110 is configured to display a third frame, but its other components are basically the same, so redundant descriptions will be omitted.

[0098] According to another embodiment of the present invention, the display panel 110 of the light-emitting display device can drive an odd number of rows of pixels PX. In this case, the display panel 110 can be configured to alternately display a first frame, a second frame, and a third frame.

[0099] First, as referenced Figure 7aAs described, in the first frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Next, as referred to... Figure 8a As described, in the second frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2.

[0100] For a more detailed description of the third frame, refer to Figure 9a In the third frame, the fall time of the first transmitted signal EM1 can be different from the rise time of the second transmitted signal EM2. In this case, in the third frame, the fall time of the first transmitted signal EM1 can be slower than the rise time of the second transmitted signal EM2. Specifically, in the third frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2, and in the third frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1.

[0101] Reference Figure 9b When driving the odd-numbered rows of pixels PX of the light-emitting display device, in the third frame, both dark and bright lines may be invisible at the boundary between adjacent pixel groups PG. (See reference...) Figure 9a In the third frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2, and the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1. Therefore, both the fall time of the first transmitted signal EM1 and the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the even-numbered rows of pixels PX. Therefore, when driving the odd-numbered rows of pixels PX, the ripple of the high potential voltage VDD caused by the fall of the first transmitted signal EM1 and the rise of the second transmitted signal EM2 may not occur. Therefore, as Figure 9b As shown, in the third frame, dark and bright lines may be invisible to the user.

[0102] According to another embodiment of the present invention, the display panel 110 of the light-emitting display device can be configured to alternately display a frame in which dark lines are visible, another frame in which bright lines are visible, and yet another frame in which neither dark nor bright lines are visible. Therefore, in the light-emitting display device according to another embodiment of the present invention, the brightness deviation that can occur when the display panel 110 is implemented such that multiple pixels PX are grouped to emit light in units of pixel groups PG can be improved. During the rise or fall of the emission signal EM, ripple may occur on high-potential voltage lines overlapping with the emission signal lines, thus dark or bright lines may appear at the boundaries of adjacent pixel groups PG that are visible to the user. Therefore, in the light-emitting display device according to another embodiment of the present invention, by alternately displaying a frame in which dark lines are visible and another frame in which bright lines are visible, the dark and bright lines cancel each other out, and simultaneously, another frame in which neither dark nor bright lines are visible can be alternately displayed. Therefore, the actual dark and bright lines may be invisible to the user, and the brightness deviation that can occur at the boundaries of pixel groups PG when multiple pixels PX are driven in units of groups can be further improved.

[0103] Figure 10a This is a timing diagram of the third frame of a light-emitting display device according to yet another embodiment of the present invention. Figure 10b This is a diagram of the third frame when the even-numbered rows of pixels of the light-emitting display device according to another embodiment of the present invention are driven. Figure 10a It is a timing diagram of the transmission signals EM1 and EM2, data voltage VDATA and high potential voltage VDD for the last two rows of the first pixel group PG1 and the first two rows of the second pixel group PG2, which is the pixel group PG immediately following the first pixel group PG1. This timing diagram is related to the time of the third frame expressed by the light-emitting display device according to another embodiment of the present invention. Figure 10b This is a diagram showing the state of frames displaying colors representing specific grayscale levels, where dark lines are shown in black and bright lines in white. (See reference...) Figures 10a to 1 The light-emitting display device according to another embodiment of the present invention, as described in 0C, and the reference numeral Figures 1 to 8c The only difference between the light-emitting display device 100 described according to an embodiment of the present invention is that it drives even-numbered rows of pixels PX and the display panel 110 is configured to display a third frame, but its other components are basically the same, so redundant descriptions will be omitted.

[0104] According to another embodiment of the present invention, the display panel 110 of the light-emitting display device can drive even-numbered rows of pixels PX. In this case, the display panel 110 can be configured to alternately display a first frame, a second frame, and a third frame.

[0105] First, as referenced Figure 7aAs described, in the first frame, the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the last row PG1(2N) of the first pixel group PG1. Next, as referred to... Figure 8a As described, in the second frame, the fall time of the first transmitted signal EM1 can be the same as the start time of the data signal application period of the second row PG2(2) of the second pixel group PG2.

[0106] For a more detailed description of the third frame, refer to Figure 10a In the third frame, the fall time of the first transmitted signal EM1 can be the same as the rise time of the second transmitted signal EM2. Specifically, in the third frame, the fall time of the first transmitted signal EM1 and the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2.

[0107] Reference Figure 10b When driving even-numbered rows of pixels PX in a light-emitting display device, in the third frame, both dark and bright lines may be invisible at the boundary between adjacent pixel groups PG. (See reference...) Figure 10a In the third frame, the fall time of the first transmitted signal EM1 and the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the first row PG2(1) of the second pixel group PG2. Therefore, both the fall time of the first transmitted signal EM1 and the rise time of the second transmitted signal EM2 can be the same as the start time of the data signal application period of the odd-numbered row pixels PX. Therefore, when driving the even-numbered row pixels PX, it is impossible for a high potential voltage VDD ripple to occur due to the fall of the first transmitted signal EM1 and the rise of the second transmitted signal EM2. Therefore, as Figure 10b As shown, in the third frame, dark and bright lines may be invisible to the user.

[0108] According to another embodiment of the present invention, the display panel 110 of the light-emitting display device can be configured to alternately display one frame where dark lines are visible, another frame where bright lines are visible, and yet another frame where neither dark nor bright lines are visible. Therefore, in the light-emitting display device according to another embodiment of the present invention, the brightness deviation that occurs when the display panel 110 is implemented such that multiple pixels PX are grouped to emit light in units of pixel groups PG can be improved. During the rise or fall of the emission signal EM, ripple may occur on high-potential voltage lines overlapping with the emission signal lines, thus causing dark or bright lines to appear at the boundaries of adjacent pixel groups PG, which are visible to the user. Therefore, in the light-emitting display device according to another embodiment of the present invention, one frame where dark lines are visible and another frame where bright lines are visible are alternately displayed, so that the dark and bright lines cancel each other out, and simultaneously, another frame where neither dark nor bright lines are visible can be alternately displayed. Therefore, the actual dark and bright lines can be invisible to the user, and the brightness deviation that occurs at the boundaries of pixel groups PG when multiple pixels PX are driven in units of groups can be further improved.

[0109] Exemplary embodiments of this disclosure can also be described as follows:

[0110] According to one aspect of this disclosure, a light-emitting display device is provided. The light-emitting display device includes: a display panel comprising a first pixel group and a second pixel group, the first pixel group comprising a plurality of pixels arranged in 2N rows, and the second pixel group being disposed after the first pixel group and comprising a plurality of pixels arranged in 2N rows. The light-emitting display device further includes: a signal transmission unit comprising a first transmission stage for applying the same first transmission signal to the first pixel group and a second transmission stage for applying the same second transmission signal to the second pixel group. In a first frame, the fall time of the first transmission signal and the rise time of the second transmission signal are different from each other. The fall time of the first transmission signal is the time it takes for the first transmission signal to reverse from a high voltage to a low voltage. The rise time of the second transmission signal is the time it takes for the second transmission signal to reverse from a low voltage to a high voltage.

[0111] In the first frame, the fall time of the first transmitted signal can be slower than the rise time of the second transmitted signal.

[0112] In the first frame, the fall time of the first transmitted signal can be one line slower than the rise time of the second transmitted signal during the data signal application period.

[0113] In the second frame, the fall time of the first transmitted signal may be slower than the rise time of the second transmitted signal. The fall time of the first transmitted signal in the first frame may differ from the fall time of the first transmitted signal in the second frame. The rise time of the second transmitted signal in the first frame may differ from the rise time of the second transmitted signal in the second frame.

[0114] The first and second transmitter stages can apply a first and a second transmit signal to alternately drive the first and second frames.

[0115] In the first frame, the fall time of the first transmitted signal can be the same as the start time of the data signal application period for the first row of the second pixel group. In the first frame, the rise time of the second transmitted signal can be the same as the start time of the data signal application period for the last row of the first pixel group.

[0116] In the second frame, the fall time of the first transmitted signal can be the same as the start time of the data signal application period for the second row of the second pixel group. In the second frame, the rise time of the second transmitted signal can be the same as the start time of the data signal application period for the first row of the second pixel group.

[0117] The light-emitting display device may further include: multiple emission signal lines that connect the emission signal units to multiple pixels. The light-emitting display device may also include: multiple high-potential voltage lines that apply high-potential voltages to the multiple pixels. The multiple emission signal lines and the multiple high-potential voltage lines may overlap and intersect each other.

[0118] The light-emitting display device may also include: a plurality of LEDs disposed in a plurality of pixels.

[0119] According to another aspect of this disclosure, a light-emitting display device is provided. The light-emitting display device includes: a display panel comprising a plurality of pixel groups, wherein the plurality of pixels are grouped in multiple rows. The display panel is configured to drive pixels in odd-numbered rows or pixels in even-numbered rows. The light-emitting display device further includes: a gate driver comprising a scan signal unit for applying scan signals to the plurality of pixels and a transmit signal unit for applying transmit signals to the plurality of pixels. The transmit signal unit is configured to apply the same transmit signal to pixels included in the same pixel group among the plurality of pixels. In a first frame and a second frame, the time at which the first transmit signal applied to the first pixel group among the plurality of pixel groups reverses from a gate cutoff voltage to a gate on voltage is different from the time at which the second transmit signal applied to the second pixel group among the plurality of pixel groups reverses from a gate on voltage to a gate cutoff voltage, such that the display panel is configured to alternately display a first frame with visible dark lines and a second frame with visible bright lines at the boundaries between the plurality of pixel groups.

[0120] The display panel can be configured to drive an odd number of rows of pixels. In the first frame, the time when the first transmit signal reverses from gate cutoff voltage to gate on voltage can be the same as the start time of the data signal application period for the first row of the second pixel group. In the first frame, the time when the second transmit signal reverses from gate on voltage to gate cutoff voltage can be the same as the start time of the data signal application period for the last row of the first pixel group. In the second frame, the time when the first transmit signal reverses from gate cutoff voltage to gate on voltage can be the same as the start time of the data signal application period for the second row of the second pixel group. In the second frame, the time when the second transmit signal reverses from gate on voltage to gate cutoff voltage can be the same as the start time of the data signal application period for the first row of the second pixel group.

[0121] The display panel can be configured to alternately display a first frame, a second frame, and a third frame. In the third frame, the time when the first transmit signal reverses from the gate cutoff voltage to the gate on voltage can be the same as the start time of the data signal application period for the second row of the second pixel group. In the third frame, the time when the second transmit signal reverses from the gate on voltage to the gate cutoff voltage can be the same as the start time of the data signal application period for the last row of the first pixel group.

[0122] The display panel can be configured to drive even-numbered rows of pixels. In the first frame, the time when the first transmit signal reverses from gate cutoff voltage to gate on voltage can be the same as the start time of the data signal application period for the second row of the second pixel group. In the first frame, the time when the second transmit signal reverses from gate on voltage to gate cutoff voltage can be the same as the start time of the data signal application period for the first row of the second pixel group. In the second frame, the time when the first transmit signal reverses from gate cutoff voltage to gate on voltage can be the same as the start time of the data signal application period for the first row of the second pixel group. In the second frame, the time when the second transmit signal reverses from gate on voltage to gate cutoff voltage can be the same as the start time of the data signal application period for the last row of the first pixel group.

[0123] The display panel can be configured to alternately display a first frame, a second frame, and a third frame. In the third frame, the time when the first transmit signal reverses from the gate cutoff voltage to the gate on voltage and the time when the second transmit signal reverses from the gate on voltage to the gate cutoff voltage can be the same as the start time of the data signal application period for the first row of the second pixel group.

[0124] The light-emitting display device may further include: multiple transmission signal lines that connect the transmission signal units to multiple pixels. The light-emitting display device may also include: a high-potential voltage line that applies a high-potential voltage to the multiple pixels. When the transmission signal transmitted through the multiple transmission signal lines decreases or increases, ripple may appear in the high-potential voltage transmitted through the high-potential voltage line.

[0125] Although exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and may be implemented in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are exemplary in all respects and do not limit the present disclosure. The scope of protection of the present disclosure should be interpreted based on the appended claims, and all technical concepts within the equivalent scope thereof should be interpreted as falling within the scope of the present disclosure.

Claims

1. A light-emitting display device, comprising: The display panel includes a first pixel group and a second pixel group, the first pixel group including a plurality of pixels in 2N rows, and the second pixel group being disposed after the first pixel group and including a plurality of pixels in 2N rows. as well as The signal transmission unit includes a first transmission stage for applying the same first transmission signal to the first pixel group and a second transmission stage for applying the same second transmission signal to the second pixel group. Specifically, in the first frame, the fall time of the first transmitted signal and the rise time of the second transmitted signal are different from each other, and in the second frame, the fall time of the first transmitted signal and the rise time of the second transmitted signal are different from each other. In this case, the fall time of the first transmitted signal in the first frame is different from the fall time of the first transmitted signal in the second frame. In this case, the rise time of the second transmitted signal in the first frame is different from the rise time of the second transmitted signal in the second frame. Wherein, the fall time of the first transmitted signal is the time it takes for the first transmitted signal to reverse from high voltage to low voltage. The rise time of the second transmitted signal is the time it takes for the second transmitted signal to reverse from a low voltage to a high voltage. In the first frame and the second frame, the fall time of the first transmitted signal is one line slower than the rise time of the second transmitted signal during the data signal application period.

2. The light-emitting display device according to claim 1, wherein, The first transmitter applies the first transmit signal, and the second transmitter applies the second transmit signal to alternately drive the first frame and the second frame.

3. The light-emitting display device according to claim 1, wherein, In the first frame, the fall time of the first transmitted signal is the same as the start time of the data signal application period for the first row of the second pixel group. In the first frame, the rise time of the second transmitted signal is the same as the start time of the data signal application period of the last row of the first pixel group.

4. The light-emitting display device according to claim 3, wherein, In the second frame, the fall time of the first transmitted signal is the same as the start time of the data signal application period for the second row of the second pixel group. In the second frame, the rise time of the second transmitted signal is the same as the start time of the data signal application period of the first row of the second pixel group.

5. The light-emitting display device according to claim 1, further comprising: Multiple signal transmission lines connect the signal transmission unit to the multiple pixels; as well as Multiple high-potential voltage lines apply high-potential voltages to the multiple pixels. The multiple signal transmission lines and the multiple high-potential voltage lines overlap and intersect each other.

6. The light-emitting display device according to claim 1, further comprising: Multiple LEDs are disposed in the multiple pixels.

7. A light-emitting display device, comprising: A display panel includes multiple pixel groups, wherein the pixels are grouped into multiple rows, and the display panel is configured to drive pixels in odd-numbered rows or pixels in even-numbered rows. as well as A gate driver includes a scan signal unit for applying a scan signal to the plurality of pixels and a transmit signal unit for applying a transmit signal to the plurality of pixels. The transmitting signal unit is configured to apply the same transmitting signal to pixels within the same pixel group among the plurality of pixels. In the first frame, the time at which the first emission signal applied to the first pixel group of the plurality of pixel groups reverses from the gate cutoff voltage to the gate on voltage is different from the time at which the second emission signal applied to the second pixel group of the plurality of pixel groups reverses from the gate on voltage to the gate cutoff voltage. Furthermore, in the second frame, the time at which the first emission signal applied to the first pixel group of the plurality of pixel groups reverses from the gate cutoff voltage to the gate on voltage is different from the time at which the second emission signal applied to the second pixel group of the plurality of pixel groups reverses from the gate on voltage to the gate cutoff voltage is different from each other. This allows the display panel to alternately display a first frame with visible dark lines and a second frame with visible bright lines at the boundaries between the plurality of pixel groups. In the first frame and the second frame, the time it takes for the first transmit signal to reverse from the gate cutoff voltage to the gate on voltage is one line slower than the time it takes for the second transmit signal to reverse from the gate on voltage to the gate cutoff voltage during the data signal application period.

8. The light-emitting display device according to claim 7, wherein, The display panel is configured to drive the pixels in the odd-numbered rows. In the first frame, the time at which the first transmitted signal reverses from the gate cutoff voltage to the gate on voltage is the same as the start time of the data signal application period for the first row of the second pixel group. In the first frame, the time at which the second transmitted signal reverses from the gate on voltage to the gate off voltage is the same as the start time of the data signal application period for the last row of the first pixel group. In the second frame, the time at which the first transmitted signal reverses from the gate cutoff voltage to the gate on voltage is the same as the start time of the data signal application period for the second row of the second pixel group. In the second frame, the time when the second transmission signal reverses from the gate on voltage to the gate off voltage is the same as the start time of the data signal application period for the first row of the second pixel group.

9. The light-emitting display device according to claim 8, wherein, The display panel is configured to alternately display the first frame, the second frame, and the third frame. In the third frame, the time when the first transmitted signal reverses from the gate cutoff voltage to the gate on voltage is the same as the start time of the data signal application period for the second row of the second pixel group. In the third frame, the time when the second transmitted signal reverses from the gate on voltage to the gate off voltage is the same as the start time of the data signal application period for the last row of the first pixel group.

10. The light-emitting display device according to claim 7, wherein, The display panel is configured to drive the pixels in the even-numbered rows. In the first frame, the time when the first transmitted signal reverses from the gate cutoff voltage to the gate turn-on voltage is the same as the start time of the data signal application period for the second row of the second pixel group. In the first frame, the time at which the second transmitted signal reverses from the gate on voltage to the gate off voltage is the same as the start time of the data signal application period for the first row of the second pixel group. In the second frame, the time at which the first transmitted signal reverses from the gate cutoff voltage to the gate on voltage is the same as the start time of the data signal application period for the first row of the second pixel group. In the second frame, the time when the second transmitted signal reverses from the gate on voltage to the gate off voltage is the same as the start time of the data signal application period of the last row of the first pixel group.

11. The light-emitting display device according to claim 10, wherein, The display panel is configured to alternately display the first frame, the second frame, and the third frame. In the third frame, the time when the first transmission signal reverses from the gate cutoff voltage to the gate on voltage and the time when the second transmission signal reverses from the gate on voltage to the gate cutoff voltage are the same as the start time of the data signal application period for the first row of the second pixel group.

12. The light-emitting display device according to claim 7, further comprising: Multiple signal transmission lines connect the signal transmission unit to the multiple pixels; as well as A high-potential voltage line that applies a high-potential voltage to the plurality of pixels. When the transmitted signal transmitted through the multiple transmission signal lines decreases or increases, ripple appears in the high potential voltage transmitted through the high potential voltage line.

13. A light-emitting display device, comprising: The display panel includes a first pixel group and a second pixel group, the first pixel group including a plurality of pixels in 2N rows, and the second pixel group being disposed after the first pixel group and including a plurality of pixels in 2N rows. as well as The signal transmission unit includes a first transmission stage for applying the same first transmission signal to the first pixel group and a second transmission stage for applying the same second transmission signal to the second pixel group. Specifically, in the first frame, the fall time of the first transmitted signal and the rise time of the second transmitted signal are different from each other, and in the second frame, the fall time of the first transmitted signal and the rise time of the second transmitted signal are different from each other. In this case, the fall time of the first transmitted signal in the first frame is different from the fall time of the first transmitted signal in the second frame. Wherein, the rise time of the second transmitted signal in the first frame is different from the rise time of the second transmitted signal in the second frame, and The first transmitter stage applies the first transmit signal, and the second transmitter stage applies the second transmit signal to alternately drive the first frame and the second frame. In the first frame and the second frame, the fall time of the first transmitted signal is one line slower than the rise time of the second transmitted signal during the data signal application period.

14. The light-emitting display device according to claim 13, wherein, In the first frame, the fall time of the first transmitted signal is the same as the start time of the data signal application period for the first row of the second pixel group. In the first frame, the rise time of the second transmitted signal is the same as the start time of the data signal application period of the last row of the first pixel group.

15. The light-emitting display device according to claim 14, wherein, In the second frame, the fall time of the first transmitted signal is the same as the start time of the data signal application period for the second row of the second pixel group. In the second frame, the rise time of the second transmitted signal is the same as the start time of the data signal application period of the first row of the second pixel group.

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