Display device

Abstract

A display device includes a display panel including a plurality of pixels, and an image capturing unit disposed below the plurality of pixels, wherein, when the image capturing unit is driven, the display panel is time-division driven by dividing one frame into a plurality of sub-frame sections, and the image capturing unit is synchronized with the display panel to receive different color data for each section of the plurality of sub-frame sections.

Description

Technical Field

[0001] The implementation method relates to a display device. Background Technology

[0002] Depending on the material of the light-emitting layer, electroluminescent display devices can be divided into inorganic light-emitting display devices and organic light-emitting display devices. Active-matrix organic light-emitting display devices include self-emissive organic light-emitting diodes (OLEDs) and have advantages such as fast response time, high luminous efficiency, high illuminance, and wide viewing angle. Organic light-emitting display devices can have OLEDs formed in each pixel. Organic light-emitting display devices can represent black grayscale levels as perfect black and have fast response time, high luminous efficiency, high illuminance, and wide viewing angle, thus exhibiting excellent contrast and color gamut.

[0003] Recently, the multimedia capabilities of mobile devices have improved. For example, cameras are now largely built into mobile devices, and their resolution is increasing to levels comparable to existing digital cameras. However, the front-facing camera on mobile devices limits screen design, making screen design difficult. To reduce the space occupied by the camera, screen designs including notches or punch-holes have been adopted in mobile devices, but because screen size is still limited by the camera, achieving a full-screen display is challenging.

[0004] To achieve full-screen display, a method has been proposed to prepare an image capture area with low-resolution pixels in the screen of the display panel and to set a camera and / or various sensors in the image capture area. Summary of the Invention

[0005] Therefore, embodiments of this disclosure relate to display devices that substantially alleviate one or more problems caused by limitations and defects in related technologies.

[0006] One aspect of this disclosure is to provide a display device capable of improving the quality of images captured by a front-facing camera.

[0007] Additional features and aspects will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practicing the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by means of the structures specifically pointed out (or derived therefrom) in the written description, as well as the appended claims and drawings.

[0008] To achieve these and other aspects of the inventive concept, as implemented and broadly described herein, a display device includes: a display panel comprising a plurality of pixels; and an image capture unit disposed below the plurality of pixels, wherein, when the image capture unit is driven, the display panel is time-division driven by dividing a frame into a plurality of subframe segments, and the image capture unit is synchronized with the display panel to receive different color data for each of the plurality of subframe segments.

[0009] The display panel may include a first display area having a first pixel density and a second display area having a second pixel density lower than the first pixel density, and the image capture unit may be disposed below the second display area.

[0010] In each segment of the subframe, the color data output from the display panel may differ from the color data received by the image capture unit.

[0011] The display device may include: a display panel driving unit configured to drive a display panel; and an image capture unit driving unit configured to drive an image capture unit, wherein when the image capture unit is driven, the display panel driving unit and the image capture unit driving unit can synchronize with each other to drive each of the display panel and the image capture unit in a time-division manner.

[0012] The display panel driving unit can adjust the data voltage applied to the pixel during time-division driving to be greater than the data voltage applied to the pixel during normal driving when time-division driving is not performed.

[0013] The display device may include a filter module configured to allow light to selectively strike the image capture unit, wherein the filter module may include a blue filter, a green filter, and a red filter.

[0014] The filter module allows one of the blue, green, and red filters to be selectively set in the second display area for each of the multiple subframe segments.

[0015] The multiple subframe segments may include a first subframe segment, a second subframe segment, and a third subframe segment. In the first subframe segment, the image capture unit can receive blue data and the display panel can output green and red data. In the second subframe segment, the image capture unit can receive green data and the display panel can output blue and red data. In the third subframe segment, the image capture unit can receive red data and the display panel can output blue and green data.

[0016] When the image capture unit is driven, the driving frequency used to drive the display panel can be varied.

[0017] When the image capture unit is driven, the first display area can be driven in normal mode without time-division driving, and the second display area can be driven in time-division.

[0018] When the image capture unit is driven, the first display area can be driven at a first driving frequency, and the second display area can be driven at a second driving frequency different from the first driving frequency.

[0019] When the image capture unit is driven, the first display area can simultaneously output red, green and blue data that constitute the image, and the second display area can simultaneously output only two of the red, green and blue data for each of the multiple subframe segments.

[0020] An image capture unit may include a blocking segment between multiple subframe segments where no input data is received.

[0021] In another aspect, a display device includes: a display panel including a first display area having a first pixel density and a second display area having a second pixel density lower than the first pixel density; an image capture unit disposed below the second display area; and a filter module configured to allow light to selectively incident on the image capture unit, wherein the image capture unit is time-division controlled to receive different color data through the filter module for each time segment.

[0022] When the image capture unit is driven, the display panel can be time-division driven by dividing a frame into multiple subframe segments, and the color data output from the display panel in the multiple subframe segments may be different from the color data received by the image capture unit.

[0023] It should be understood that both the above general description and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed inventive concept. Attached Figure Description

[0024] The accompanying drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain various principles. In the drawings:

[0025] Figure 1 This is a conceptual diagram of a display device according to one embodiment of the present disclosure;

[0026] Figure 2 This is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present disclosure;

[0027] Figure 3AThis is a diagram illustrating the pixel arrangement in a first display area according to one embodiment of the present disclosure;

[0028] Figure 3B This is a diagram illustrating the pixels and light-transmitting area of ​​the second display area;

[0029] Figure 4 This is a schematic diagram illustrating the structure of the display panel in the second display area;

[0030] Figure 5 This is a diagram illustrating the state where only a portion of the light data is selectively incident on the image capture unit;

[0031] Figure 6A This is a diagram illustrating the state where only red data is selectively incident on the image capture unit through the filter module;

[0032] Figure 6B This is a diagram illustrating the state in which multiple sensing pixels of the image capture unit receive red data;

[0033] Figure 7A This is a diagram illustrating the state where only green data is selectively incident on the image capture unit through the filter module;

[0034] Figure 7B This is a diagram illustrating the state in which multiple sensing pixels of the image capture unit receive green data;

[0035] Figure 8A This is a diagram illustrating the state where only blue data is selectively incident on the image capture unit through the filter module;

[0036] Figure 8B This is a diagram illustrating the state in which multiple sensing pixels of the image capture unit receive blue data;

[0037] Figure 9 This example illustrates the first modification to the filter module;

[0038] Figures 10A to 10C A diagram illustrating a second modified example of the filter module is shown;

[0039] Figure 11 This is a diagram illustrating the time-division driving of the display panel and the image capture unit;

[0040] Figure 12 This is a diagram illustrating the driving timing of a light-blocking section where the sensed data is not incident on the image capture unit;

[0041] Figure 13 This is a graph illustrating the difference between the data voltages applied during normal driving and time-division driving of the display panel;

[0042] Figure 14A This is a diagram illustrating the data voltage and illuminance applied to the pixels of the second display area during normal driving;

[0043] Figure 14B This is a diagram illustrating the data voltage and illuminance applied to the pixels of the second display area in time-division driving;

[0044] Figure 15 This is a block diagram of a display device according to an embodiment of the present disclosure;

[0045] Figure 16 This is a diagram illustrating the drive timing during normal drive and time-division drive of the display panel;

[0046] Figure 17 This is a diagram illustrating the driving timing of the image capture unit, the first display area, and the second display area;

[0047] Figure 18 This is a diagram illustrating the state in which the cathode of the first display area and the cathode of the second display area are separated;

[0048] Figure 19 Examples Figure 17 First example of modification;

[0049] Figure 20 Examples Figure 17 The second modified example; and

[0050] Figure 21 Examples Figure 17 The third modified example. Detailed Implementation

[0051] The advantages and features of this disclosure, and its implementation methods, will be elucidated through the following embodiments described in conjunction with the accompanying drawings. However, this disclosure is not limited to the embodiments described below and can be implemented with various modifications. The embodiments are provided only to allow those skilled in the art to fully understand the scope of this disclosure, and this disclosure is limited only by the scope of the claims.

[0052] The figures, dimensions, scales, angles, quantities, etc., disclosed in the accompanying drawings to describe embodiments of the present disclosure are merely illustrative and are not limited to the matters shown in the present disclosure. Throughout the specification, similar reference numerals may refer to similar elements. In the description of the present disclosure, detailed descriptions of known technologies related to the present disclosure may be omitted when it is determined that such detailed descriptions would obscure the subject matter of the present disclosure.

[0053] Terms such as “including,” “comprising,” and “consisting of” as used herein are intended to allow for the addition of other elements, unless used in conjunction with the term “only.” Unless otherwise expressly stated, any reference to the singular may include the plural.

[0054] Even without explicit statement, components can be interpreted as including the normal error range.

[0055] When describing positional relationships, for example, when the positional relationship between two components is described as "on," "above," "below," "next to," etc., one or more components may be inserted between them unless the terms "immediately" or "directly" are used in the expression.

[0056] In the description of the embodiments, the terms "first," "second," etc., may be used to describe various components, but the components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, without departing from the teachings of this disclosure, the first component discussed below may be referred to as the second component.

[0057] Throughout the specification, similar reference numerals may refer to similar components.

[0058] Features of various implementations can be combined or integrated with each other, either partially or completely. Implementations can be technically interoperable and performed in various ways, and can be performed independently or in conjunction with each other.

[0059] In the following, various embodiments of this disclosure will be described in detail with reference to the accompanying drawings.

[0060] Figure 1 This is a conceptual diagram of a display device according to one embodiment of the present disclosure. Figure 2 This is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present disclosure. Figure 3A This is a diagram illustrating the pixel arrangement in a first display area according to one embodiment of the present disclosure.

[0061] Reference Figure 1 The display device includes a display panel 100, and the front surface of the display panel 100 can be configured as a display area. Therefore, a full-screen display can be achieved. The display device can be the display panel itself, or it can be a concept that includes both the display panel and a driving unit.

[0062] The display area may include a first display area DA and a second display area CA. Both the first display area DA and the second display area CA may output images, but their resolutions may differ. As an example, the resolution of a plurality of second pixels set in the second display area CA may be lower than the resolution of a plurality of first pixels set in the first display area DA. A relatively large amount of light can be injected into sensors 40 and 50 set in the second display area CA at a resolution as reduced as that of the plurality of second pixels set in the second display area CA.

[0063] However, this disclosure is not limited thereto, and the resolution of the first display area DA and the resolution of the second display area CA can be the same, provided that the second display area CA has sufficient transmittance or that a suitable compensation algorithm can be implemented.

[0064] The second display area CA can be the area where sensors 40 and 50 are located. The second display area CA overlaps with the various sensors, and therefore can be smaller in area than the first display area DA, which outputs most of the image.

[0065] The second display area CA is illustrated as being positioned at the top of the display device, but this disclosure is not limited to this. The position and area of ​​the second display area CA can be modified in various ways.

[0066] Sensors 40 and 50 may include at least one of an image sensor, a proximity sensor, an illumination sensor, a gesture sensor, a motion sensor, a fingerprint sensor, and a biometric sensor. As an example, the first sensor may be an illumination sensor or an infrared sensor, while the second sensor may be an image sensor configured to capture images or videos, but this disclosure is not limited thereto.

[0067] Reference Figure 2 and Figure 3A The first display area DA and the second display area CA may include a pixel array in which pixels for which pixel data is written may be disposed. To ensure the light transmittance of the second display area CA, the number of pixels per unit area of ​​the second display area CA (hereinafter referred to as "pixels per inch (PPI)") may be lower than the number of pixels per unit area of ​​the first display area DA.

[0068] The pixel array of the first display area DA may include a pixel region in which multiple pixel groups with high PPI are disposed. The pixel array of the second display area CA may include a pixel region in which multiple pixel groups with relatively low PPI are disposed spaced apart from each other by a light-transmitting region. In the second display area CA, external light can pass through the display panel 100 through the light-transmitting region with high light transmittance and can be received by a sensor placed below the display panel 100.

[0069] Since both the first display area DA and the second display area CA include pixels, the input image can be reproduced on both the first display area DA and the second display area CA. Therefore, full-screen display can be achieved.

[0070] Each pixel in the first display area DA and the second display area CA may include sub-pixels of different colors to achieve the color of the image. Sub-pixels may include red, green, and blue sub-pixels. Although not shown in the figure, the pixel group may also include white sub-pixels. Each sub-pixel may include a pixel circuit unit and a light-emitting element (e.g., an organic light-emitting diode: OLED).

[0071] The second display area CA may include pixels and an image capture unit 40 disposed below the screen of the display panel 100. The image capture unit 40 may include an image sensor. The pixels of the second display area CA can display an input image by writing pixel data of an input image in a display mode.

[0072] The image capture unit 40 can capture external images in image capture mode to output picture or video image data. The image capture unit 40 can be a camera module that captures external images to output picture or video image data, but is not limited to this, and can have various structures capable of acquiring images.

[0073] The filter module 60 can be positioned above the image capture unit 40. The filter module 60 allows light incident on the second display area to selectively pass through.

[0074] To ensure light transmittance, since the pixels are removed from the second display area CA, an image quality compensation algorithm can be applied to compensate for the illuminance and color coordinates of the pixels in the second display area CA.

[0075] The display panel 100 may have a width in the X-axis direction, a length in the Y-axis direction, and a thickness in the Z-axis direction. The display panel 100 may include a circuit layer 12 disposed on a substrate 10, and a light-emitting element layer 14 disposed on the circuit layer 12. A polarizing plate 18 may be disposed on the light-emitting element layer 14, and a cover glass 20 may be disposed on the polarizing plate 18.

[0076] The circuit layer 12 may include pixel circuits connected to lines such as data lines, gating lines, and power lines, gating drive units connected to gating lines, etc.

[0077] Circuit layer 12 may include circuit elements such as transistors implemented as thin-film transistors (TFTs), capacitors, etc. The lines and circuit elements of circuit layer 12 may be implemented using multiple insulating layers, two or more metal layers separated from each other by the insulating layers therebetween, and active layers including semiconductor materials.

[0078] The light-emitting element layer 14 may include light-emitting elements driven by pixel circuitry. The light-emitting element may be implemented as an OLED. An OLED may include an organic compound layer formed between an anode and a cathode.

[0079] The organic compound layer may include a hole injection layer (HIL), a hole transport layer (HTL), a light emission layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL), but this disclosure is not limited thereto.

[0080] When a voltage is applied to the anode and cathode of an OLED, holes passing through the hole transport layer (HTL) and electrons passing through the electron transport layer (ETL) move to the emissive layer (EML) to create excitons, thus allowing visible light to be emitted from the EML.

[0081] The light-emitting element layer 14 may also include an array of color filters that selectively transmit light of red, green and blue wavelengths.

[0082] The light-emitting element layer 14 can be covered by a protective film, and the protective film can be covered by an encapsulation layer. The protective film and encapsulation layer can have a structure in which organic and inorganic films are alternately stacked. The inorganic film can block the penetration of moisture or oxygen. The organic film can planarize the surface of the inorganic film. When organic and inorganic films are stacked in multiple layers, the path length for moisture or oxygen to move is increased compared to a single layer, thus effectively blocking the penetration of moisture / oxygen affecting the light-emitting element layer 14.

[0083] The polarizing plate 18 can be disposed on the encapsulation layer. The polarizing plate 18 can improve the outdoor visibility of the display device. The polarizing plate 18 can reduce the reflection of light from the surface of the display panel 100 and block light reflected from the metal of the circuit layer 12, thereby improving the brightness of the pixels. The polarizing plate 18 can be implemented as a polarizing plate or a circular polarizing plate that combines a linear polarizing plate and a phase retardation film.

[0084] Reference Figure 3AThe first display area DA may include a plurality of first pixel groups PG1 arranged in a matrix. Within the plurality of first pixel groups PG1, two sub-pixels may form a pixel using a sub-pixel rendering algorithm. For example, a first unit pixel PIX1 may include R sub-pixels SP1 and G1 sub-pixels SP2, and a second unit pixel PIX2 may include B sub-pixels SP3 and G2 sub-pixels SP4. Insufficient color rendering in each of the unit pixels PIX1 and PIX2 can be compensated by averaging the corresponding color data between adjacent pixels. However, this disclosure is not limited thereto, and each of the plurality of first pixel groups PG1 may be a real-type pixel including R sub-pixels, G sub-pixels, and B sub-pixels.

[0085] Figure 3B This is a diagram illustrating the pixels and light-transmitting area of ​​a second display area according to one embodiment of the present disclosure.

[0086] Reference Figure 3B The second display area CA may include multiple second pixel groups PG2 and multiple light-transmitting areas TA. The multiple light-transmitting areas TA can be disposed between the multiple second pixel groups PG2. Specifically, each of the light-transmitting areas TA and the second pixel groups PG2 can be alternately disposed in a first direction and a second direction. External light can be received by the image capture unit 40 through the light-transmitting areas TA. The resolution of the second display area CA can be reduced relative to the resolution of the first display area DA by increasing the area of ​​the light-transmitting areas TA.

[0087] The light-transmitting area TA can include a transparent medium with high light transmittance but without metal, allowing light to enter with little or no light loss. The light-transmitting area TA can be made of a transparent insulating material and does not include metal lines or pixels. As the light-transmitting area TA becomes larger, the light transmittance of the second display area CA can be even higher.

[0088] Each of the plurality of second pixel groups PG2 may include one or two pixels. For example, in each second pixel group PG2, the first unit pixel PIX1 may include R sub-pixel SP1 and G1 sub-pixel SP2, and the second unit pixel PIX2 may include B sub-pixel SP3 and G2 sub-pixel SP4. The shape and arrangement of the pixels in the second pixel group PG2 may be the same as or different from the shape and arrangement of the first pixel group PG1.

[0089] The shape of the light-transmitting area TA is illustrated as a quadrilateral, but this disclosure is not limited thereto. For example, the light-transmitting area TA can be designed into various shapes such as circular, elliptical, polygonal, etc.

[0090] All metal electrode material can be removed from the light-transmitting region TA. Therefore, the pixel lines can be positioned outside the light-transmitting region TA. Thus, light can be effectively incident through the light-transmitting region. However, this disclosure is not limited to this, and metal electrode material can be present in a portion of the light-transmitting region TA.

[0091] Figure 4 This is a diagram that schematically illustrates the structure of the display panel in the second display area.

[0092] Reference Figure 4 The display panel may include a circuit layer 12 disposed on the substrate 10, and a light-emitting element layer 14 disposed on the circuit layer 12. A polarizing plate 18 may be disposed on the light-emitting element layer 14, and a cover glass 20 may be disposed on the polarizing plate 18.

[0093] In the polarizing plate 18, a first light-transmitting pattern 18d can be formed in the region corresponding to the light-transmitting region TA. Based on green light with a wavelength of 555 nm, the transmittance of the substrate made of PI is approximately 70% to 80%, and the transmittance of the cathode is approximately 80% to 90%. On the other hand, the transmittance of the polarizing plate 18 is relatively very low, at approximately 40%. Therefore, in order to effectively improve the transmittance of the light-transmitting region, it is necessary to improve the transmittance of the polarizing plate 18.

[0094] According to the embodiment, the polarizing plate 18 has a first light-transmitting pattern 18d formed above the light-transmitting region TA to improve light transmittance. The light transmittance of the region where the first light-transmitting pattern is formed can be the highest in the polarizing plate.

[0095] The first light-transmitting pattern 18d of the polarizing plate 18 can be formed by removing a portion of the polarizing plate 18, or by decomposing the compounds constituting the polarizing plate 18. That is, the first light-transmitting pattern 18d can have various structures that can increase the light transmittance of a conventional polarizing plate 18.

[0096] In the light-transmitting region TA, the polarizing plate 18 may have a first light-transmitting pattern 18d, and the cathode CAT may have a second light-transmitting pattern. The second light-transmitting pattern may be an opening H1 formed in the light-transmitting region TA. Since the transmittance of the cathode is 80% to 90%, the transmittance of the light-transmitting region TA may be further increased due to the opening H1.

[0097] There are no particular limitations on the method for forming the opening H1 in the cathode CAT. As an example, after the cathode is formed, the opening H1 can be formed in the cathode using an etching process, or the cathode can be removed from the lower part of the substrate 10 using a laser.

[0098] The planarization layer PCL can be formed on the cathode CAT, and the touch sensor TOE can be disposed on the planarization layer PCL. Here, in the light-transmitting region TA, the sensing electrodes and lines of the touch sensor can be made of a transparent material such as indium tin oxide (ITO) or a metal mesh, thereby increasing light transmittance. In another example, the sensing electrodes and lines of the touch sensor can be disposed outside the light-transmitting region TA, and may not be disposed within the light-transmitting region TA.

[0099] The image capture unit 40 can be positioned below the first light-transmitting pattern 18d and / or the opening H1, and can increase the amount of incident light. The filter module 60 can be positioned above the image capture unit 40. The filter module 60 allows light incident on the image capture unit 40 to pass selectively.

[0100] Figure 5 This is a diagram illustrating the state where only a portion of the light data is selectively incident on the image capture unit.

[0101] Reference Figure 5 The image capture unit 40 can be disposed below the second display area CA of the display panel 100. However, the image capture unit 40 can also be disposed below the first display area DA. According to the embodiment, since multiple pixels are disposed above the image capture unit 40, the data regarding externally incident light may be relatively insufficient.

[0102] Therefore, it is possible to extract insufficient image data using Bayer filters and algorithms. However, such a configuration may require a high-resolution image sensor, and the computational load may increase during the extraction of insufficient image data using algorithms.

[0103] Generally, data about light incident from the outside can include blue, green, and red data. The filter module 60 can selectively use the light data incident on the image capture unit 40.

[0104] The structure of the filter module 60 is not particularly limited. As an example, the filter module 60 may include various types of filters capable of selectively passing blue, green, and red data.

[0105] The host system 1A of the display device can control the display panel driving unit 2A and the image capture unit driving unit 2B to synchronize the display panel 100 and the image capture unit 40 when the image capture unit 40 is driven, and drive each of the display panel 100 and the image capture unit 40 in time-division multiplexing.

[0106] The image capture unit drive unit 2B can drive the image capture unit 40 and the filter module 60 according to the timing signal received from the host system 1A. The host system can be the main circuit board of a television system, a camera, a set-top box, a navigation system, a personal computer (PC), a vehicle system, a home theater system, a mobile device, or a wearable device.

[0107] The display panel 100 can be synchronized with the image capture unit 40 and controlled in a time-division manner so that color data incident on the image capture unit 40 is not output. For example, when the color data incident on the image capture unit 40 is red data in a specific time segment, the display panel 100 can output only green and blue data and may not output red data. That is, the display panel driving unit 2A can only illuminate the green and blue pixels and prevent the red pixels from illuminating. Therefore, the problem of image distortion caused by light output from the display panel 100 being introduced into the image capture unit 40 can be prevented.

[0108] When using a conventional Bayer filter, each sensing pixel constituting an image sensor can receive only one of blue, green, and red data. For example, a sensing pixel can receive only blue data, and green and red data can be calculated through post-processing. Therefore, there is a concern that an image sensor with high resolution should be used.

[0109] On the other hand, according to the implementation method, blue, green, and red data can all be incident on a single sensing pixel. Therefore, the resolution can be improved by three times or more compared to a conventional Bayer filter.

[0110] Figure 6A This is a diagram illustrating the state where only red data is selectively incident on the image capture unit through the filter module. Figure 6B This is a diagram illustrating the state in which red data is received by multiple sensing pixels of the image capture unit.

[0111] Figure 7A This is a diagram illustrating the state where only green data is selectively incident on the image capture unit through the filter module. Figure 7B This is a diagram illustrating the state in which green data is received by multiple sensing pixels of the image capture unit. Figure 8A This is a diagram illustrating the state where only blue data is selectively incident on the image capture unit through the filter module. Figure 8B This is a diagram illustrating the state in which blue data is received by multiple sensing pixels of the image capture unit.

[0112] Reference Figure 6AThe filter module 60 may include a filter array 61 in which a red filter 61R, a green filter 61G, and a blue filter 61B are disposed, and a drive unit 62 configured to rotate the filter array 61. The filter module 60 is disposed below the second display area CA, which allows for the unrestricted application of various shutter structures capable of changing filters for each time segment.

[0113] The red filter 61R of the filter module 60 can be rotated by the drive unit 62 and positioned below the second display area CA. Therefore, only the red data in the light data incident on the second display area CA can pass through the filter module 60 and be incident on the image capture unit 40.

[0114] Reference Figure 6B Red data can be written to each of the plurality of sensing pixels 41 in the image capture unit 40. The plurality of sensing pixels can be unit pixels of a charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) image sensor. The input value RI of the red data written to each of the plurality of sensing pixels 41 can vary depending on the color of the realized image. Darker areas in the image can be regions with relatively large data values.

[0115] Reference Figure 7A When the green filter 61G of the filter module 60 is positioned below the second display area CA, only the green data in the light data incident on the second display area CA can pass through the filter module 60 and be incident on the image capture unit 40. Therefore, as Figure 7B As shown, green data can be written to each of the multiple sensing pixels 41 of the image sensor. The input value GI of the green data written to each of the multiple sensing pixels 41 can vary depending on the color of the resulting image. The darker areas in the figure can be regions with relatively large data values.

[0116] Reference Figure 8A When the blue filter 61B of the filter module 60 is positioned below the second display area CA, only the blue data in the light data incident on the second display area CA can pass through the filter module 60 and be incident on the image capture unit 40. Therefore, as Figure 8B As shown, blue data can be written to each of the multiple sensing pixels 41 of the image sensor. The input value BI of the blue data written to each of the multiple sensing pixels 41 can vary depending on the color of the realized image. The darker areas in the figure can be regions with relatively large data values.

[0117] According to this configuration, each sensing pixel 41 constituting the image sensor can receive all red, green, and blue data. Therefore, each sensing pixel can increase resolution compared to a Bayer filter that can only receive one of the red, green, and blue data.

[0118] The image synthesis unit (not shown) can synthesize the red data, green data and blue data output sequentially from the image capture unit 40 to generate an image.

[0119] Figure 9 This example illustrates the first modification to the filter module. Figures 10A to 10C The second modified example of the filter module is shown.

[0120] Reference Figure 9 The filter module 60 can be configured as a stacked color filter. In the stacked color filter, the red filter 62R, the green filter 62G, and the blue filter 62B can be stacked and sequentially arranged below the second display area CA by the drive unit 62. Therefore, light data can be selectively incident on the image capture unit 40 through multiple filters.

[0121] Reference Figures 10A to 10C The filter module 60 may include multiple splitters and multiple shutters. Therefore, light incident on the second display area CA can be separated into multiple beams according to its wavelength by the multiple splitters.

[0122] As an example, refer to Figure 10A In the incident light, only the first light L1 can be transmitted through the first splitter 63a, and the second light L2 and the third light L3 can be reflected by the first splitter 63a.

[0123] The second light L2 can be reflected by the second separator 63b, and the third light L3 can be transmitted through it. Furthermore, the third light L3 can be reflected by the first reflector 63c and the second reflector 63e, thus altering its path.

[0124] When the first shutter 64b and the second shutter 64a are closed and the third shutter 64c is open, the third light L3 can be incident on the multi-reflector 65, reflected by the multi-reflector 65, and incident on the image capture unit 40. The first light can be red data, the second light can be green data, and the third light can be blue data.

[0125] Reference Figure 10B When the first shutter 64b and the third shutter 64c are closed and the second shutter 64a is open, the second light L2 can be transmitted through the multi-reflector plate 65 to be incident on the image capture unit 40.

[0126] Reference Figure 10C When the second shutter 64a and the third shutter 64c are closed and the first shutter 64b is open, the first light L1 can be incident on the multi-reflector plate 65 and reflected by the multi-reflector plate 65 to be incident on the image capture unit 40.

[0127] Various structures can be applied without limitation for the configuration described above that allows light to selectively strike the image capture unit 40. Alternatively, the filter module 60 may be embedded in the image capture unit 40 and be mechanically or electrically driven.

[0128] Figure 11 This is a diagram illustrating the time-division driving of the display panel and image capture unit. Figure 12 This is a diagram illustrating the driving timing of a light-blocking section where sensing data is not incident on the image capture unit.

[0129] Reference Figure 11 When the image capture unit 40 is driven, the display panel 100 and the image capture unit 40 can be synchronized with each other and can each be driven by time division. A frame can be divided into multiple subframes SF1, SF2 and SF3, and the image capture unit 40 can receive different color data for each segment in the multiple subframes SF1, SF2 and SF3.

[0130] As an example, multiple subframes SF1, SF2, and SF3 may include a first subframe SF1, a second subframe SF2, and a third subframe SF3. In the segment of the first subframe SF1, the image capture unit 40 can sense red data and the display panel 100 can output green and blue data.

[0131] Similarly, in the second subframe SF2, the image capture unit 40 can use the filter module 60 to sense green data, and the display panel 100 can output red and blue data. Furthermore, in the third subframe SF3, the image capture unit 40 can sense blue data, and the display panel 100 can output red and green data. That is, the display panel 100 can simultaneously output only two types of data from red, green, and blue data for each subframe segment.

[0132] According to this configuration, image data output from the display panel 100 can be prevented from being introduced into the image capture unit 40 through the filter module 60, thereby preventing color mixing. Therefore, the image quality of the image generated by the image capture unit 40 can be improved by preventing noise caused by the image data emitted from the display panel 100.

[0133] In the implementation, a method for dividing a frame into three blocks and having the three blocks driven by time division is illustrated, but the number of block segments can be modified in various ways.

[0134] Reference Figure 12 Considering the time it takes for the filter module 60 to move the filter, a blocking segment BT that does not introduce data can be included in the segment between multiple subframes. Therefore, noise can be blocked by preventing the introduction of data in the segment between multiple subframes. The blocking segment BT can be implemented by closing the shutter of the image capture unit 40, but there are no limitations on the various methods that can form the blocking segment.

[0135] Figure 13 This is a graph illustrating the difference between the data voltages applied during normal driving and time-division driving of the display panel. Figure 14A This is a diagram illustrating the data voltage and illuminance applied to a pixel during normal driving. Figure 14B This is a diagram illustrating the data voltage and illuminance applied to a pixel in time-division driving.

[0136] Reference Figure 13 When the image capture unit 40 is not driven, the display panel 100 can operate in normal mode without time-division driving. When the image capture unit 40 is driven, the display panel 100 can perform time-division driving. Both the first display area DA and the second display area CA of the display panel 100 can be time-division driven, but this disclosure is not limited to this, and only the second display area CA can be time-division driven.

[0137] In Normal Mode (Mode1), the color data required to create a still image can be continuously output during a single frame segment. In Time Division Mode (Mode2), the color data required to create a still image can be divided and output for each segment of multiple subframes SF1, SF2, and SF3.

[0138] Therefore, in time-division mode, the illumination may be less than in normal mode because the necessary color data is not output in some subframe segments.

[0139] Therefore, in the implementation, in time-division mode, the voltage increment Vdata1 used to compensate for non-output segments is added to the data voltage Vdata applied to each pixel in normal mode, and the sum voltage is applied to the pixels so that the overall illuminance can be controlled in the same way as in normal mode.

[0140] Reference Figure 14A and Figure 14B In time-division driving, the increased range of data voltages reduces the emission time of each pixel, allowing for illuminance compensation. Therefore, users can distinguish that the illuminance LM1 in normal driving and the illuminance LM2 in time-division driving are the same.

[0141] Figure 15 This is a block diagram of a display device according to an embodiment of the present disclosure.

[0142] Reference Figure 15 The display device according to the embodiments of the present disclosure may include a display panel 100, a display panel driving unit 2A for writing pixel data of an input image to a pixel P of the display panel 100, a timing controller 130 for controlling the display panel driving unit, and a power supply unit 150 for generating the power required to drive the display panel 100.

[0143] The display panel 100 may include a pixel array for displaying an input image on the screen. As described above, the pixel array may be divided into a first display area DA and a second display area CA having a resolution or PPI lower than that of the first display area DA.

[0144] Since the first display area DA includes high PPI pixels P and is therefore larger in size than the second display area CA, most of the image information is displayed on the first display area DA. An image capture unit overlapping the second display area CA can be located in the lower part of the display panel 100.

[0145] The touch sensor can be mounted on the screen of the display panel 100. The touch sensor can be mounted on the screen of the display panel in an on-cell or add-on manner, or it can be implemented as an in-cell touch sensor embedded in the pixel array.

[0146] The display panel 100 can be implemented as a flexible display panel, wherein pixels P are disposed on a flexible substrate such as a plastic substrate or a metal substrate. In a flexible display, the size and shape of the screen can be changed by rolling, folding, and bending the flexible display panel.

[0147] Flexible displays can include sliding displays, rollable displays, bendable displays, foldable displays, etc.

[0148] The display panel driving unit can drive the pixel P by applying internal compensation technology.

[0149] The display panel driving unit 2A can reproduce the input image on the screen of the display panel 100 by writing the pixel data of the input image to the sub-pixels.

[0150] The display panel driving unit 2A may include a first data driving unit 110, a second data driving unit 111, a first gating driving unit 120, and a second gating driving unit 123. The display panel driving unit may also include a demultiplexer 112 disposed between the data line DL and the data driving units 110 and 111.

[0151] The display panel driving unit 2A can operate in a low-speed drive mode under the control of the timing controller 130. In low-speed drive mode, the input image is analyzed, and the power consumption of the display device can be reduced when the input image does not change within a preset time period.

[0152] In low-speed drive mode, when a still image is input for a certain period of time or longer, the refresh rate of pixel P is reduced to control the data writing period of pixel P to be longer, thereby reducing power consumption.

[0153] The low-speed drive mode is not limited to inputting a still image. For example, the display panel drive circuit can operate in low-speed drive mode when the display device is operating in standby mode, or when a user command or input image has not been input to the display panel drive circuit for a predetermined period of time or longer.

[0154] The first data driving unit 110 can sample pixel data to be written to the pixels of the first display area DA from the pixel data received from the self-timing controller 130. The first data driving unit 110 can use a digital-to-analog converter (hereinafter referred to as "DAC") to convert the pixel data to be written to the pixels into a gamma-compensated voltage and output a data voltage Vdata.

[0155] The data voltage Vdata output from the channel of the first data driving unit 110 can be applied to the data line DL of the pixel connected to the first display area DA through the demultiplexer 112, or it can be applied directly to the data line DL.

[0156] The second data driving unit 111 can receive pixel data to be written to the second display area CA from pixel data received as a digital signal from the timing controller 130. The second data driving unit 111 can use a DAC to convert the pixel data to be written to the second display area CA into a gamma-compensated voltage to output a data voltage Vdata.

[0157] The data voltage Vdata output from the channel of the second data driving unit 111 can be applied to the data line DL of the pixel connected to the second display area CA through the demultiplexer 112, or it can be applied directly to the data line DL.

[0158] The first data driving unit 110 and the second data driving unit 111 can be a single data driving unit performing the same function, or they can be separate driving units that operate independently. For example, when both the first display area DA and the second display area CA are time-division driven during the image capture period, the first data driving unit and the second data driving unit can be a single driving unit. However, when only the second display area CA is time-division driven, the first data driving unit 110 and the second data driving unit 111 can be separate driving units that operate independently.

[0159] Each of the first data driving unit 110 and the second data driving unit 111 may include a voltage divider circuit for outputting a gamma compensation voltage. The voltage divider circuit can divide the gamma reference voltage received from the power supply unit 150 to generate a gamma compensation voltage for each gray level and provide the gamma compensation voltage to the DAC. The DAC can convert pixel data into a gamma compensation voltage to output a data voltage Vdata.

[0160] Demultiplexer 112 can time-division multiplex the data voltage Vdata output from the channels of data drive units 110 and 111 to multiple data lines DL. Due to demultiplexer 112, the number of channels in data drive units 110 and 111 can be reduced. However, this disclosure is not limited thereto, and demultiplexer 112 may be omitted.

[0161] The first gating drive unit 120 can be implemented as an in-panel gating (GIP) circuit formed directly in the bezel area BZ of the display panel 100 along with the TFT array of the pixel array. Under the control of the timing controller 130, the first gating drive unit 120 can output gating signals to the gating lines GL of the pixels connected to the first display area DA.

[0162] The first gating drive unit 120 can use a shift register to shift gating signals to sequentially provide signals to the gating lines GL of the pixels connected to the first display area DA.

[0163] The voltage of the gating signal can swing between a gating cutoff voltage VGH and a gating on voltage VGL. The gating signal applied to the pixel of the first display area DA may include a pulse of a scan signal (hereinafter referred to as a "scan pulse") and a pulse of a light emission control signal (hereinafter referred to as a "EM pulse"). The gating line GL connected to the pixel of the first display area DA may include a scan line to which a scan pulse is applied and an EM line to which an EM pulse is applied.

[0164] The first gating drive unit 120 can be disposed in each of the left and right bezel areas BZ of the display panel 100 to provide gating signals to the gating line GL using a dual-feed method.

[0165] In the dual-feed method, the first gating drive unit 120, which is set on the two edges of the display panel 100, is synchronized by the timing controller 130, so that the gating signal can be applied to both ends of a gating line at the same time.

[0166] In another embodiment, the first gating drive unit 120 may be disposed on one of the left and right borders of the display panel 100 to provide gating signals to the gating line GL using a single-feed method.

[0167] The first gating drive unit 120 may include a first-first gating drive unit 121 and a first-second gating drive unit 122. The first-first gating drive unit 121 may output scan pulses, shift the scan pulses according to a shift clock, and sequentially provide scan pulses to the scan lines connected to the pixels of the first display area DA.

[0168] The first-second gating drive unit 122 can output EM pulses, shift the EM pulses according to the shift clock, and sequentially provide the EM pulses to the EM lines of the pixels connected to the first display area DA.

[0169] The second gating drive unit 123 can output gating signals to the gating lines GL of the pixels connected to the second display area CA under the control of the timing controller 130. The second gating drive unit 123 can use a shift register to shift the gating signals so that the signals are sequentially provided to the gating lines GL of the pixels connected to the second display area CA.

[0170] The voltage of the gating signal can swing between a gating cutoff voltage VGH and a gating on voltage VGL. The gating signal applied to the pixels of the second display area CA may include a scan pulse. The gating line GL connected to the pixels of the second display area CA may include a scan line to which a scan pulse is applied.

[0171] The second gating drive unit 123 can be implemented as an array gating (GIA) circuit disposed in the second display area CA or in at least one bezel area BZ of the display panel 100. However, the location of the second gating drive unit 123 is not particularly limited.

[0172] Furthermore, a portion of the second gating drive unit 123 can be disposed in the second display area CA, while the remaining circuitry of the second gating drive unit 123 can be disposed in the bezel area BZ of the display panel 100. The second gating drive unit 123 can output scan pulses, shift the scan pulses according to a shift clock, and sequentially provide the scan pulses to the scan lines of the pixels connected to the second display area CA.

[0173] The timing controller 130 can receive pixel data of the input image and timing signals synchronized with the pixel data from the host system. The timing signals may include a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a clock CLK, a data enable signal DE, etc.

[0174] One period of the vertical synchronization signal Vsync is one frame period. One period each of the horizontal synchronization signal Hsync and the data enable signal DE is one horizontal period 1H. The pulse of the data enable signal DE can synchronize with the line data of pixel P to be written to a pixel line. Since the frame period and horizontal period can be obtained by counting the data enable signal DE, the vertical synchronization signal Vsync and the horizontal synchronization signal Hsync can be omitted.

[0175] The timing controller 130 can send the pixel data of the input image to the first data driving unit 110 and the second data driving unit 111, and control the operation timing of the display panel driving unit so that the first data driving unit 110 and the second data driving unit 111, the demultiplexer 112, and the first gating driving unit 120 and the second gating driving unit 123 are synchronized with each other.

[0176] The timing controller 130 can multiply the input frame frequency by i (where i is a natural number) to control the operation timing of the display panel drive unit 2A at a frame frequency of input frame frequency × iHz.

[0177] The input frame rate of the National Television Standards Committee (NTSC) is 60 Hz, and the input frame rate of Phase-Alternating Line (PAL) is 50 Hz. In order to reduce the refresh rate of pixel P in low-speed drive mode, the timing controller 130 can reduce the frame rate to a frequency in the range of 1 Hz to 30 Hz.

[0178] The timing controller 130 can be based on the host system 1A (see...) Figure 5 The received timing signals Vsync, Hsync, and DE generate a data timing control signal for controlling the operation timing of the first data driving unit 110, a switch control signal for controlling the operation timing of the demultiplexer 112, and a gating timing control signal for controlling the operation timing of the first gating driving unit 120.

[0179] The gating timing control signal may include a start pulse, a shift clock, a reset signal, an initialization signal, etc. The voltage level of the gating timing control signal output from the timing controller 130 can be converted into a gating cutoff voltage VGH / VEH and a gating on voltage VGL / VEL by a level shifter (omitted in the figure) and provided to the first gating drive unit 120.

[0180] A level shifter can convert a low-level voltage of the gating timing control signal into a gating on-state voltage VGL, and a high-level voltage of the gating timing control signal into a gating off-state voltage VGH.

[0181] The power supply unit 150 may include a charge pump, a rectifier, a buck converter, a boost converter, a programmable gamma integrated circuit (P-GMA IC), etc.

[0182] The power supply unit 150 can adjust the DC input voltage received from the host system to generate the power required to drive the display panel drive unit and the display panel 100.

[0183] The power supply unit 150 can output DC voltages such as gamma reference voltage, gating cutoff voltage VGH / VEH, gating on voltage VGL / VEL, pixel drive voltage ELVDD, low-level power supply voltage ELVSS, initialization voltage Vini, and reference voltage Vref.

[0184] The programmable gamma IC can change the gamma reference voltage according to the register settings. The gamma reference voltage can be provided to the first data drive unit 110. The gamma cutoff voltage VGH / VEH and the gamma turn-on voltage VGL / VEL can be provided to the level shifter and the first gamma drive unit 120.

[0185] The pixel drive voltage ELVDD, low-potential supply voltage ELVSS, initialization voltage Vini, and reference voltage Vref can be supplied to the pixel circuit via power lines. The pixel drive voltage ELVDD can be set to a voltage higher than the low-potential supply voltage ELVSS, the initialization voltage Vini, and the reference voltage Vref.

[0186] In mobile or wearable devices, the timing controller 130, the first data drive unit 110, and the power supply unit 150 can be integrated into a single driver IC (D-IC).

[0187] The PPI of the second display area CA is lower than that of the first display area DA. Therefore, when the data voltage Vdata applied to pixel P in the second display area CA is equal to the data voltage Vdata applied to pixel P in the first display area DA at the same gray level, the illuminance of the second display area CA can be lower than that of the first display area DA.

[0188] To compensate for the illuminance difference between the first display area DA and the second display area CA, the data voltage Vdata output from the second data driving unit 111 can be set to have a larger voltage range than the data voltage Vdata output from the first data driving unit 110. The data voltage Vdata can be determined based on the gamma compensation voltage. Therefore, to extend the voltage range of the data voltage Vdata, the output voltage range of the programmable gamma IC can be extended.

[0189] Additionally, during time-division driving, data voltage is not output in some subframe segments. Therefore, the data voltage Vdata can be set to a larger voltage range in the subframe segments that output the corresponding color data to compensate for the data voltage.

[0190] Figure 16 This is a diagram illustrating the drive timing during normal drive and time-division drive of the display panel. Figure 17 This is a diagram illustrating the driving timing of the image capture unit, the first display area, and the second display area. Figure 18 This is a diagram illustrating the state in which the cathodes of the first display area and the second display area are separated.

[0191] Reference Figure 5 and Figure 16 When the image capture unit 40 is not driven, the display panel 100 can be driven at the first driving frequency. However, when the image capture unit 40 is driven, the display panel 100 and the image capture unit 40 can be driven in a time-division manner at a second driving frequency lower than the first driving frequency, thereby ensuring the rotational speed margin of the filter module. In other words, both the first display area DA and the second display area CA of the display panel 100 can be driven in a time-division manner at the second driving frequency.

[0192] When a drive signal is received from the image capture unit 40, the timing controller 130 of the display device can change the drive frequency, and the display panel drive unit 2A can operate the display panel 100 according to the changed frequency.

[0193] In this case, the second driving frequency can be lower than the first driving frequency, but it can be a speed that is imperceptible to humans. As an example, the first driving frequency can be 60Hz and the second driving frequency can be 20Hz, but this disclosure is not limited to this.

[0194] Reference Figure 15 and Figure 17 When the image capture unit 40 is not driven, both the first display area DA and the second display area CA can be driven in normal mode. However, when a drive signal is input to the image capture unit 40, the first display area DA can be driven in normal mode, while the second display area CA can be driven by a high-speed field sequence.

[0195] In other words, in the second display area CA, a frame can be divided into multiple subframes SF1, SF2 and SF3 to output different color data, and the image capture unit 40 can receive different color data for each segment of the multiple subframes SF1, SF2 and SF3.

[0196] Here, the color data output from the second display area CA may differ from the color data received by the image capture unit. As an example, in the segment of the first subframe SF1, the image capture unit may sense red data while the display panel may output green and blue data, thereby preventing light output from the display panel from being received by the image capture unit.

[0197] The second data driving unit 111 can increase and output a data voltage such that the overall illuminance of the second display area CA during time-division driving is equal to the illuminance of the second display area CA in normal mode. There are no particular limitations on the configuration of independently controlling the data voltage. As an example, different data voltages can be applied by separating the pixel driving voltage ELVDD or the low-potential power supply voltage ELVSS. However, this disclosure is not limited to this, and various configurations can be applied to different methods of setting the data voltage.

[0198] According to an embodiment, the first voltage level applied by the second data driving unit 111 to the pixels of the second display area CA can be greater than the second voltage level applied by the first data driving unit 110 to the pixels of the first display area DA.

[0199] When operating in normal mode, the illuminance is relatively low due to the lower PPI of the second display area CA. This can be compensated for by increasing the data voltage level. Furthermore, in time-division driving, the data voltage applied to the pixels of the second display area CA can be increased by adding a first voltage increase to compensate for the low illuminance caused by the low PPI to a second voltage increase to compensate for the reduced illuminance caused by the shortened emission time due to time-division driving.

[0200] According to this embodiment, when the image capture unit 40 is not driven, the first display area DA and the second display area CA can output image data equally. However, when the image capture unit 40 is driven, only the second display area CA can be driven in a time-division manner. Furthermore, the light output from the second display area CA can be independently controlled to prevent it from being introduced into the image capture unit, and the illuminance of the second display area CA can be independently adjusted.

[0201] Figure 18 This is a diagram illustrating an example of separating the cathode of the light-emitting element between low PPI and high PPI regions so that an independent low-potential power supply voltage is applied to the pixel in each region.

[0202] Reference Figure 18 The first display area DA may include a first cathode CAT1. The first cathode CAT1 may be connected to the light-emitting element (OLED) of the pixel disposed in the first display area DA. A first low-potential power supply voltage ELVSS1 may be applied to the first cathode CAT1.

[0203] The second display area CA may include a second cathode CAT2. The second cathode CAT2 may be separate from the first cathode CAT1. Therefore, the first cathode CAT1 and the second cathode CAT2 can apply low-potential power supply voltages ELVSS1 and ELVSS2 with different voltage levels to the pixels of each area. Thus, the data voltage level applied to the second display area CA can be controlled independently. However, this disclosure is not limited to this; the data voltage level can also be controlled independently by separating ELVDD.

[0204] Figure 19 Examples Figure 17 The first modified example. Figure 20 Examples Figure 17 The second modified example. Figure 21 Examples Figure 17 The third modified example.

[0205] Reference Figure 19 When the image capture unit 40 is not driven, the first display area DA and the second display area CA can output image data equally. However, when the image capture unit 40 is driven, both the first display area DA and the second display area CA can output image data. The second display area CA can be time-division driven. That is, when the image capture unit is driven, both the first display area DA and the second display area CA can be driven by high-speed field sequencing.

[0206] Reference Figure 20 When the drive signal of the input image capture unit 40 is received, the first display area DA can be driven in normal mode, while the second display area CA can be driven in time-division mode.

[0207] Here, the second display area CA can operate at a second drive frequency lower than the current drive frequency. As described above, this configuration can be achieved by separately driving the first strobe drive unit and the second strobe drive unit.

[0208] In the second display area CA, a frame can be divided into multiple subframes SF1, SF2 and SF3 to output different color data, and the image capture unit 40 can receive different color data for each segment of the multiple subframes SF1, SF2 and SF3.

[0209] Here, the color data output from the second display area CA may differ from the color data received by the image capture unit. For example, in a segment of the first subframe, the image capture unit may sense red data, and the display panel may output green and blue data.

[0210] The second data driving unit 111 can increase and output data voltage so that the overall illuminance of the second display area CA is equal to the illuminance of the first display area DA during time-division driving.

[0211] Additionally, refer to Figure 21 When the image capture unit 40 is driven, both the first display area DA and the second display area CA are driven in a time-division manner, and the driving frequency changes slowly to ensure the rotational speed margin of the filter module.

[0212] According to the implementation method, the quality of images captured by the front-facing camera of a full-screen display can be improved.

[0213] The effects of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the appended claims other unmentioned effects.

[0214] It will be apparent to those skilled in the art that various modifications and alterations can be made to the display apparatus of this disclosure without departing from the disclosed technical spirit or scope. Therefore, this disclosure is intended to cover such modifications and alterations, provided they fall within the scope of the appended claims and their equivalents.

[0215] Cross-reference to related applications

[0216] This application claims priority and benefit to Korean Patent Application No. 10-2021-0173551, filed on December 7, 2021, the disclosure of which is incorporated herein by reference in its entirety.

Claims

1. A display device, the display device comprising: The display panel includes a plurality of pixels; as well as An image capture unit is disposed below the plurality of pixels. When the image capture unit is driven, the display panel is time-division driven by dividing a frame into multiple sub-frame segments. The image capture unit is synchronized with the display panel to receive different color data for each of the plurality of subframe segments, and In each of the plurality of subframe segments, the color data output from the display panel is different from the color data received by the image capture unit.

2. The display device according to claim 1, wherein, The display panel includes a first display area having a first pixel density and a second display area having a second pixel density lower than the first pixel density, and The image capture unit is positioned below the second display area.

3. The display device according to claim 2, wherein, When the image capture unit is driven, the second display area is synchronized with the image capture unit to be driven in a time-division manner.

4. The display device according to claim 2, wherein, The first display area and the second display area are driven separately by two data driving units.

5. The display device according to claim 2, wherein, The first display area includes a first cathode that is commonly connected to light-emitting elements of the pixels included in the first display area. The second display area includes a second cathode that is connected to light-emitting elements of the pixels included in the second display area, and The first cathode is separate from the second cathode.

6. The display device according to claim 1, further comprising: Display panel driving unit, the display panel driving unit being configured to drive the display panel; as well as An image capture unit driver unit is configured to drive the image capture unit. When the image capture unit is driven, the display panel driving unit and the image capture unit driving unit are synchronized with each other to perform time-division driving on each of the display panel and the image capture unit.

7. The display device according to claim 6, wherein, The display panel driving unit adjusts the data voltage applied to the pixel during time-division driving to be greater than the data voltage applied to the pixel during normal driving when the time-division driving is not performed.

8. The display device according to claim 2, further comprising a filter module configured to allow light to be selectively incident on the image capture unit. in, The filter module includes a blue filter, a green filter, and a red filter.

9. The display device according to claim 8, wherein, The filter module allows one of the blue filter, the green filter, and the red filter to be selectively set in the second display area for each of the plurality of subframe segments.

10. The display device according to claim 1, wherein, The plurality of subframe segments include a first subframe segment, a second subframe segment, and a third subframe segment. In the first subframe segment, the image capture unit receives blue data, and the display panel outputs green and red data. In the second subframe segment, the image capture unit receives the green data, and the display panel outputs the blue and red data. In the third subframe segment, the image capture unit receives the red data, and the display panel outputs the blue data and the green data.

11. The display device according to claim 2, wherein, When the image capture unit is not driven, the display panel is driven at a first driving frequency, and when the image capture unit is driven, the display panel and the image capture unit are driven in a time-division manner at a second driving frequency lower than the first driving frequency.

12. The display device according to claim 2, wherein, When the image capture unit is driven The first display area is driven in a normal mode without the time-division driving, and The second display area is time-division driven.

13. The display device according to claim 12, wherein, When the image capture unit is driven The first display area is driven at a first driving frequency, and The second display area is driven at a second driving frequency that is different from the first driving frequency.

14. The display device according to claim 2, wherein, When the image capture unit is driven The first display area simultaneously outputs the red, green, and blue data that constitute the image, and The second display area simultaneously outputs only two types of data from the red data, the green data, and the blue data for each of the plurality of subframe segments.

15. The display device according to claim 1, wherein, The image capture unit includes a blocking section between the plurality of subframe segments where no input data is received.

16. A display device, the display device comprising: The display panel includes a first display area having a first pixel density and a second display area having a second pixel density lower than the first pixel density; An image capture unit is disposed below the second display area; as well as A filter module configured to allow light to be selectively incident on the image capture unit. The image capture unit is time-division controlled to receive different color data through the filter module for each time segment. When the image capture unit is driven, the display panel is time-division driven by dividing a frame into multiple sub-frame segments, and In the plurality of subframe segments, the color data output from the display panel is different from the color data received by the image capture unit.

17. A display device, the display device comprising a first display area having a first pixel density and a second display area having a second pixel density lower than the first pixel density, in, An image capture unit is positioned below the second display area, and the image capture unit is time-division controlled to receive different color data through a filter module for each time segment. The second display area is allowed to be time-division driven by dividing a frame into multiple subframe segments, and During time-division driving, the second display area simultaneously outputs only two types of data—red, green, and blue—for each of the plurality of sub-frame segments. Specifically, the display panel driving unit adjusts the data voltage applied to the second pixel during time-division driving to be greater than the data voltage applied to the pixel during normal driving when the time-division driving is not performed.

18. The display device according to claim 17, wherein, The first display area is allowed to be time-division driven by dividing a frame into multiple subframe segments, and During time-division driving, the first display area and the second display area simultaneously output only two types of data—red data, green data, and blue data—for each of the plurality of subframe segments.

Images