CN109065592B

CN109065592B - OLED (organic light emitting diode) special-shaped screen and display device

Info

Publication number: CN109065592B
Application number: CN201810909784.8A
Authority: CN
Inventors: 王建强; 彭利满; 马玲玲; 田刚; 刘祺
Original assignee: BOE Technology Group Co Ltd; Ordos Yuansheng Optoelectronics Co Ltd
Current assignee: BOE Technology Group Co Ltd; Ordos Yuansheng Optoelectronics Co Ltd
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2022-04-15
Anticipated expiration: 2038-08-10
Also published as: CN109065592A

Abstract

The utility model provides a OLED dysmorphism screen and display device belongs to and shows technical field. The OLED special-shaped screen is provided with a display area, the OLED special-shaped screen comprises pixels distributed in the display area in an array mode, and each pixel comprises sub-pixels of at least three colors; the sub-pixel of at least one color in at least one of the pixels in the edge area of the display area includes a plurality of sub-pixel units independently controlled to emit the same color light. This OLED dysmorphism screen can avoid showing unusually, improves display effect.

Description

OLED (organic light emitting diode) special-shaped screen and display device

Technical Field

The utility model relates to a show technical field, especially relate to a OLED dysmorphism screen, display device.

Background

With the progress of display technology, the special-shaped wearing product can be rapidly applied and popularized. Shaped wearing articles typically employ shaped display panels having partially or fully curved edges.

The special-shaped display panel comprises a plurality of pixels in a display area, and each pixel comprises a plurality of sub-pixels with different colors; the color mixing ratio of the light rays with different colors can be adjusted by adjusting the luminous intensity of the sub-pixels with different colors so as to display images. The special-shaped display panel usually adopts a combination of an open Mask and an FFM (Fine Metal Mask) as an evaporation Mask to evaporate a display area, and the FFM is easily influenced by a circular edge opening of the open Mask at a lower layer, so that cross color is easily generated in an edge area of the display area, the white balance of the edge area is abnormal, and the display effect of the special-shaped display panel is reduced.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a special-shaped screen of OLED and display device can avoid showing unusually, improves display effect.

In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:

according to a first aspect of the present disclosure, an OLED shaped screen is provided, having a display area, the OLED shaped screen including pixels distributed in an array in the display area, each of the pixels including sub-pixels of at least three colors; the sub-pixel of at least one color in at least one of the pixels in the edge area of the display area includes a plurality of sub-pixel units independently controlled to emit the same color light.

In an exemplary embodiment of the present disclosure, the OLED special-shaped screen is circular, and the edge area is a sector area which is not less than a preset distance from the center of the OLED special-shaped screen.

In an exemplary embodiment of the disclosure, the edge area is one or more outermost fan-shaped areas of a plurality of fan-shaped areas formed by equally dividing the OLED special-shaped screen along a radius.

In an exemplary embodiment of the present disclosure, at least one of the pixels of the edge region includes an R sub-pixel, a G sub-pixel, and a B sub-pixel;

the R sub-pixel and the G sub-pixel are arranged on the same side of the B sub-pixel along the length direction of the B sub-pixel;

the outer contour of the R sub-pixel and the outer contour of the G sub-pixel have the same size, and the orthographic projection on one long edge of the outer contour of the B sub-pixel does not exceed the long edge.

In one exemplary embodiment of the present disclosure, the R sub-pixel includes a plurality of R sub-pixel units controlled to emit red light independently of each other; and the G sub-pixel comprises a plurality of G sub-pixel units which are controlled to emit green light independently.

In an exemplary embodiment of the present disclosure, the R sub-pixel units are four in number and the same in size; the four R sub-pixel units are distributed in an array type central symmetry mode;

the number of the G sub-pixel units is four, and the G sub-pixel units are the same in size; the four G sub-pixel units are distributed in an array type central symmetry mode.

In an exemplary embodiment of the present disclosure, the B sub-pixel includes a plurality of B sub-pixel units independently controlled to emit blue light.

In an exemplary embodiment of the present disclosure, the B sub-pixel units are four in number and the same in size; the four B sub-pixel units are distributed in an array type central symmetry mode.

In an exemplary embodiment of the present disclosure, the OLED profile screen further includes:

at least two drive circuit layers which are arranged in a stacked mode are arranged in the edge area of the display area;

and each layer of the driving circuit layer is provided with a plurality of thin film transistors in an array.

According to a second aspect of the present disclosure, a display device is provided, which includes the OLED special-shaped screen.

The OLED special-shaped screen provided by the disclosure has the advantages that at least one color sub-pixel in at least one pixel in the edge area comprises a plurality of sub-pixel units which are independently controlled to emit light with the same color. When the light emission intensity of some sub-pixel units of the sub-pixel is abnormal due to color cross, the light emission intensity of other non-color cross sub-pixel units of the sub-pixel can be adjusted, or the light emission intensity of the sub-pixel unit in which color cross occurs can be directly adjusted, so that the light emission intensity of the color cross sub-pixel is compensated, and the light emission intensity of the color cross sub-pixel and the light emission intensity of other sub-pixels in the same pixel realize white balance. Therefore, the OLED special-shaped screen provided by the disclosure partially or completely eliminates abnormal white balance caused by color crosstalk in a sub-pixel unit light-emitting compensation mode, maintains the white balance of the edge area, overcomes the influence of color crosstalk, and improves the display effect.

Drawings

The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural diagram of a pixel according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a pixel according to an embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a cross color phenomenon of a sub-pixel unit according to an embodiment of the disclosure.

Fig. 4 is a schematic diagram of a display panel according to an embodiment of the disclosure.

Fig. 5 is a schematic structural diagram of a pixel distribution according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

The numerical description of the main elements in the figures includes:

1. a pixel; 11. a B sub-pixel; 111. b1 subpixel unit; 112. b2 subpixel unit; 113. b3 subpixel unit; 114. b4 subpixel unit; 12. g sub-pixel; 121. a G1 sub-pixel cell; 122. a G2 sub-pixel cell; 123. a G3 sub-pixel cell; 124. a G4 sub-pixel cell; 13. an R sub-pixel; 131. an R1 sub-pixel element; 132. an R2 sub-pixel element; 133. an R3 sub-pixel element; 134. an R4 sub-pixel element; 2. a pixel; 3. a display area; 31. a sector area; 4. a substrate base plate; 51. a first buffer layer; 52. a second buffer layer; 6. a first pixel driving circuit layer; 61. a first active layer; 611. a drain contact region; 612. a channel region; 613. a source contact region; 614. a silicon electrode plate layer; 62. a first gate insulating layer; 63. a first gate layer; 64. a second gate insulating layer; 65. an intermediate layer; 66. a source electrode; 67. a drain electrode; 68. a planarization layer; 69. a second gate layer; 7. a second pixel driving circuit layer; 81. a first anode layer; 82. a second anode layer; 9. a pixel definition layer.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the primary technical ideas of the disclosure.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings.

The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.

In the related art, when a special-shaped display panel required by special-shaped wearing equipment is prepared, pixels need to be evaporated in a display area through an evaporation process. Taking an OLED (Organic Light-Emitting Diode) special-shaped display panel as an example, R pixels, G pixels, B pixels, ITO (Indium tin oxide), and pixel circuits on an OLED special-shaped screen are arranged in a horizontal parallel manner, which requires evaporation of R, G, B Light-Emitting regions in a display region by means of a combination of an open mask and an FFM. During evaporation, the FFM is susceptible to color cross in the edge area of the display region due to the open mask arc edge openings. Because each sub-pixel (pixel) is controlled by an independent TFT (thin film transistor), when the current of the adjacent sub-pixels with the same color under the whole picture is the same, the luminous brightness of the sub-pixels with the color crosstalk is different due to the influence of the color crosstalk, and further, the abnormal white balance occurs when the OLED special screen displays a white picture.

The disclosed embodiment provides an OLED special-shaped screen, which is provided with a display area, wherein the display area can be in a shape of a circle, an ellipse, a fan, a ring and the like, and the shape of the display area is provided with at least one section of arc-shaped edge.

As shown in fig. 1, the OLED shaped screen includes pixels distributed in the display area array, each pixel including at least three color sub-pixels; at least one color sub-pixel in at least one pixel in the edge area of the display area includes a plurality of sub-pixel units independently controlled to emit the same color light.

The components of the OLED profile screen provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings:

in one embodiment, as shown in fig. 4, the OLED profile may be circular. The circular display panel is a circular ring area in an area which is not less than a preset distance away from the center of the circular display panel, and the whole or a part of the circular ring area can be used as the edge area of the display area.

The skilled person can determine the size of the edge region in the radial direction by various methods, for example, the width of the edge region can be determined by means of radius halving, radius division, setting a preset distance, setting the width of the edge region, and the like. For example, in one embodiment, a circular display panel may be equally divided into 360 sector regions along the center thereof, then each sector region is equally divided by N (N is a natural number) using a radius equal division method with the center as a starting point to form more sector regions, and then one or more (outermost) sector regions away from the center of the circular display panel may be taken as edge regions.

In another embodiment, the circular display panel may be equally divided into 360 sector-shaped regions along the center thereof, and then each sector-shaped region is divided by a predetermined step length along the radial direction using the center as the starting point by a radius division method to form more sector-shaped regions, and then one or more (outermost) sector-shaped regions away from the center of the circular display panel are taken as the edge regions. The preset step size may be selected and adjusted according to the resolution of the display panel, for example, the preset step size may be 0.5 mm.

In the embodiment of the present invention, the pixel 1 is a pixel that is disposed in the edge area and at least one sub-pixel includes a plurality of sub-pixel units that are independently controlled, the number of the sub-pixels included in the pixel 1 may also be three, four, five, six or other numbers, the size and shape of each sub-pixel may be the same, not completely the same or completely different, and a skilled person may select and apply the sub-pixels according to needs. In order to make the pixel capable of matching full color, it needs to include at least three color sub-pixels, the number of each color sub-pixel can be one or more, and each sub-pixel includes at least one pixel unit.

For example, as shown in fig. 1, the pixel 1 may include three sub-pixels emitting light of different colors. By way of example, the pixel 1 may include a B (blue) sub-pixel 11, a G (green) sub-pixel 12, and an R (red) sub-pixel 13. The B sub-pixel 11, the G sub-pixel 12, and the R sub-pixel 13 may be adjacent to each other two by two, and the G sub-pixel 12 and the R sub-pixel 13 are located on the same side of the B sub-pixel 11.

In one embodiment, the outer contour of the B sub-pixel is rectangular; the R sub-pixel and the G sub-pixel are arranged on the same side of the B sub-pixel along the length direction of the B sub-pixel; the outer contour of the R sub-pixel and the outer contour of the G sub-pixel are square with the same size, and the orthographic projection on one long edge of the outer contour of the B sub-pixel does not exceed the long edge.

Since the G sub-pixel 12 and the R sub-pixel 13 are located on the same side of the B sub-pixel 11 and are in close proximity, color crosstalk easily occurs between the G sub-pixel 12 and the R sub-pixel 13. Therefore, the G sub-pixel 12 may include a plurality of G sub-pixel units controlled independently of each other to emit green light; also, the R sub-pixel 13 may include a plurality of R sub-pixel units controlled to emit red light independently of each other.

As shown in fig. 1 and 2, the G sub-pixel 12 may be formed by arranging 2 to 6G sub-pixel units, each of which is individually controlled to emit light by a TFT. Since the G sub-pixels 12 may be affected by cross color in different directions, the G sub-pixel units are distributed in an array type with central symmetry, so as to reduce the possibility that all G sub-pixel units in the G sub-pixels 12 are affected by cross color. When one or more of the G sub-pixel units are affected by cross color and the light emission intensity deviates from the preset value, the light emission intensity compensation can be performed by adjusting other G sub-pixel units in the G sub-pixel 12. Of course, the skilled person can also compensate the emission intensity by adjusting the emission intensity of the G sub-pixel unit affected by the cross color.

Similarly, the R sub-pixel 13 may be formed by arranging 2 to 6R sub-pixel units, and each R sub-pixel unit is individually controlled to emit light by a TFT. Since the R sub-pixels 13 may be affected by color cross in different directions, the plurality of R sub-pixel units are distributed in an array type with central symmetry, so as to reduce the possibility that all the R sub-pixel units in the R sub-pixels 13 are affected by color cross. When one or more of the R sub-pixel units are affected by cross color and the light emission intensity deviates from the preset value, the light emission intensity compensation is performed by adjusting the other R sub-pixel units in the R sub-pixel 13. Of course, the skilled person can also compensate the luminous intensity by adjusting the luminous intensity of the R sub-pixel unit affected by the cross color.

For example, as shown in fig. 1, the G sub-pixel 12 may include four G sub-pixel units, and the four G sub-pixel units are distributed in a central symmetry manner, and exhibit a rectangular distribution of 2 × 2 as a whole; the four G sub-pixel units are squares with the same size, and may be a G1 sub-pixel unit 121, a G2 sub-pixel unit 122, a G3 sub-pixel unit 123, and a G4 sub-pixel unit 124. The R sub-pixel 13 may include four R sub-pixel units, and the four R sub-pixel units are distributed in central symmetry; the four R sub-pixel units are squares with the same size, and may be the R1 sub-pixel unit 131, the R2 sub-pixel unit 132, the R3 sub-pixel unit 133 and the R4 sub-pixel unit 134, which exhibit a 2 × 2 rectangular distribution as a whole.

The method and principle of the OLED profile panel of the present disclosure to overcome the cross color will now be explained and explained by taking the case of the cross color of the R sub-pixel 13 as an example. As shown in fig. 3, in one embodiment, when the lower partial region of the R sub-pixel 13 is cross-colored, that is, the R1 sub-pixel unit 131 and the R4 sub-pixel unit 134 of the R sub-pixel 13 are partially cross-colored, the light emission intensity thereof will be changed under the same control voltage (or control current), and if no adjustment is made, the light emission intensity of the whole R sub-pixel 13 will be changed, which may cause abnormal white balance of the whole pixel. At this time, the intensity of the light emitted from the R2 sub-pixel unit 132 and the R3 sub-pixel unit 133 may be changed by adjusting the control voltage (or the control current) of the R sub-pixel unit in the upper partial region of the R sub-pixel 13, so that the final R sub-pixel 13 has the overall light intensity in white balance with the B sub-pixel 11 and the G sub-pixel 12. Of course, it is also possible to adjust only the emission intensity of the R2 sub-pixel element 132 or the R3 sub-pixel element 133 to compensate for the emission intensity variations of the R1 sub-pixel element 131 and the R4 sub-pixel element 134. In another embodiment, the light emission compensation for the R sub-pixel 13 may be achieved by adjusting the light emission intensities of the R1 sub-pixel cell 131 and the R4 sub-pixel cell 134 that are affected by cross color.

As shown in fig. 2, since the B sub-pixel 11 may also be affected by cross color, the B sub-pixel 11 may also be divided into a plurality of different B sub-pixel units. The B sub-pixel 11 may be formed by arranging 2 to 6B sub-pixel units, and each B sub-pixel unit individually controls light emission through a TFT. Since the B sub-pixels 11 may be affected by cross color in different directions, the plurality of B sub-pixel units may be distributed in an array type with central symmetry, so as to reduce the possibility that all B sub-pixel units in the B sub-pixels 11 are affected by cross color. When one or more of the B sub-pixel units are affected by cross color and the light emission intensity deviates from the preset value, the light emission intensity compensation is performed by adjusting the other B sub-pixel units in the B sub-pixel 11. Of course, the light emission intensity compensation may be performed by adjusting the light emission intensity of the B sub-pixel unit affected by the cross color.

For example, the B sub-pixel 11 may include four B sub-pixel units, which are rectangles with the same size, and are respectively the B1 sub-pixel unit 111, the B2 sub-pixel unit 112, the B3 sub-pixel unit 113, and the B4 sub-pixel unit 114, and the four pixel units exhibit a 2 × 2 rectangular distribution as a whole.

The skilled person may determine the amount of compensation for the luminous intensity of the cross-colored sub-pixels by a number of algorithms. For example, since the light emitting intensity of the pixel unit is proportional to the current (current), after the gray scale driving is adopted, the I-V curve (current-voltage curve) of the pixel unit emitting light normally can be obtained through data acquisition, and a formula of quantized current and voltage is obtained through fitting. And calculating the compensation quantity of the pixel unit of each cross-color sub-pixel according to the quantized current and voltage formula and combining data acquisition, burning the compensation quantity into the DIC, and compensating the luminous intensity of the sub-pixels by compensating the luminous intensity of the pixel unit so that the luminous intensity of the cross-color sub-pixels is the same as that of the non-cross-color sub-pixels. As will be apparent to those skilled in the art, the pixel cells for performing compensation light emission may be either pixel cells in which color crosstalk does not occur in the color-crosstalk sub-pixels or pixel cells in which color crosstalk occurs.

In order to arrange more TFTs in the same area and realize independent control of each pixel unit, all or part of the OLED special-shaped screen can be provided with a pixel driving circuit layer with a multilayer structure, the pixel driving circuit layers are arranged in a stacked mode, and the TFTs are arranged on each pixel driving circuit layer in an array mode and used for controlling independent light emission of each pixel unit. The pixel driving circuit layer of the multi-layer structure may be disposed at the edge area. Of course, the OLED special-shaped screen may also include only one pixel driving circuit layer, and each sub-pixel unit is independently controlled by one corresponding TFT by increasing the TFT arrangement density of the pixel driving circuit layer in the edge area.

For example, the OLED special-shaped screen has a double-layer pixel driving circuit layer, and the double-layer pixel driving circuit layer comprises a second pixel driving circuit layer 7 and a first pixel driving circuit layer 6. And each pixel driving circuit layer is provided with a plurality of TFTs in an array mode, and each TFT is correspondingly connected with each sub-pixel unit one by one and controls each sub-pixel unit to independently emit light.

Of course, similarly, those skilled in the art may also set three stacked pixel driving circuit layers, four stacked pixel driving circuit layers, or other number of stacked pixel driving circuit layers, where each pixel driving circuit layer is provided with TFTs in an array and each TFT controls one sub-pixel unit, so as to increase the number of TFTs in a limited planar area, and to individually control each sub-pixel unit of a sub-pixel.

In an embodiment, taking the number of the pixel driving circuit layers as two layers as an example, as shown in fig. 6, the OLED shaped panel may include a substrate 4, a first buffer layer 51, a first pixel driving circuit layer 6, a second buffer layer 52, a second pixel driving circuit layer 7, an anode layer, and a pixel defining layer 9, where:

the first buffer layer 51 is provided on the base substrate 4;

the first pixel driving circuit layer 6 is disposed on a side of the first buffer layer 51 away from the substrate 4, and has a plurality of TFTs arranged in an array. The first pixel driving circuit layer 6 includes a first active layer 61, a silicon electrode layer 614, a first gate insulating layer 62, a first gate layer 63, a second gate insulating layer 64, a second gate layer 69, an intermediate layer 65, a source electrode 66, a drain electrode 67, and a planarization layer 68, wherein,

the first active layer 61 and the silicon electrode plate layer 614 are spaced apart from each other and provided on a side of the first buffer layer 51 away from the substrate base plate 4. The first active layer 61 includes drain 67 contact regions 611, channel regions 612, and source 66 contact regions 613 disposed at the same layer;

a first gate insulating layer 62 covers the first active layer 61, the silicon electrode plate layer 614, and the first buffer layer 51;

the first gate electrode layer 63 is provided on a side of the first gate insulating layer 62 away from the base substrate 4, and is divided into two portions facing the first active layer 61 and the silicon electrode plate layer 614;

the second gate insulating layer 64 covers the first gate layer 63 and a portion of the first gate insulating layer 62;

the second gate layer 69 is arranged on the side of the second gate insulating layer 64 away from the substrate base plate 4 and faces the silicon electrode plate layer 614;

the intermediate layer 65 covers the first gate insulating layer 62, the second gate insulating layer 64, and the second gate layer 69;

the source electrode 66 is arranged on the side of the intermediate layer 65 remote from the substrate base plate 4 and is connected with a source electrode 66 contact region 613;

the drain electrode 67 is arranged on the side of the intermediate layer 65 away from the substrate base plate 4 and is connected with a drain electrode 67 contact region 611;

the planarization layer 68 covers the intermediate layer 65, the source electrode 66, and the drain electrode 67 for forming the second buffer layer 52 on the side away from the base substrate 4.

Wherein the first active layer 61, the first gate layer 63, the source electrode 66, and the drain electrode 67 constitute a TFT.

The second buffer layer 52 is disposed on a side of the first pixel driving circuit layer 6 away from the first buffer layer 51;

the second pixel driving circuit layer 7 is disposed on a side of the second buffer layer 52 away from the substrate 4, and has a plurality of TFTs arranged in an array. The structure of the second pixel driving circuit layer 7 may be the same as that of the first pixel driving circuit layer 6.

The anode layer is arranged on one side of the second pixel driving circuit layer 7 far away from the second buffer layer 52 and is at least divided into a first anode layer 81 and a second anode layer 82, the first anode layer 81 is correspondingly connected with the drain electrode of the first pixel driving circuit layer 6 through a through hole, and the second anode 82 is correspondingly connected with the drain electrode of the second pixel driving circuit layer 7 through a through hole;

the pixel definition layer 9 is arranged on the anode layer or one side of the second pixel driving circuit layer 7 far away from the second buffer layer 52 and is provided with a first pixel; each pixel unit of the first pixel is respectively connected with an anode and is used for receiving a control signal of a corresponding TFT.

In the non-edge area of the OLED special-shaped screen, conventional pixels can be adopted for setting, and the preparation of the OLED special-shaped screen is simplified. As shown in fig. 5, a conventional pixel may be a pixel 2, and the pixel 2 includes three sub-pixels, i.e., an R sub-pixel, a G sub-pixel, and a B sub-pixel, each of which is controlled by one TFT.

For the pixel 1, when there is no cross color problem in the sub-pixel, each sub-pixel unit in the sub-pixel can be controlled by the same control voltage (or control current) to make the light-emitting intensity of each sub-pixel unit the same, so as to simplify the control method of the OLED special-shaped screen. If the sub-pixels have the color cross-color problem, each sub-pixel unit in the sub-pixels needs to be controlled independently so as to overcome the color cross-color problem.

To simplify the control of the display device, the edge area may be divided into different areas and it may be detected whether each area is affected by cross color. If all pixels in a certain area are not affected by cross color, the area is uniformly controlled, that is, the sub-pixel units in the same sub-pixel all adopt the same control voltage (or control current). If there is a color cross problem in a certain area, independent control is applied to the pixel units in the area, that is, a control voltage (or a control current) is independently configured for each sub-pixel unit according to the situation.

For example, as shown in fig. 4, in one embodiment, the display area 3 is a circle, and the edge area may be divided into a fan-shaped area 31 divided into 360 equal parts. If a color cross occurs in one of the sector areas 31, the sector area 31 can be independently controlled, i.e., each sub-pixel unit in the sector area 31 can be independently controlled.

The embodiment of the disclosure further provides a driving method of the special-shaped OLED screen, which is used for driving the special-shaped OLED screen described in the embodiment of the special-shaped OLED screen. The driving method includes: and respectively controlling each sub-pixel unit of the sub-pixel to independently emit light so as to enable the light emission intensity of the sub-pixel and the light emission intensity of other sub-pixels in the pixel to reach white balance.

The technical personnel should also know that the pixel units in the partition with cross color problem can be controlled independently by partitioning the edge area of the OLED special-shaped screen and screening out the partition with cross color problem, and the pixel units in the partition without cross color problem can be controlled uniformly.

By adopting the OLED special-shaped screen driving method provided by the disclosure, the pixels of the OLED special-shaped screen in the embodiment of the disclosure can be driven, and the color crosstalk problem is solved.

In an embodiment of the present disclosure, there is also provided a display device having the OLED shaped screen described in the above OLED shaped screen embodiment. The display device may include, but is not limited to, a television, a cell phone, a computer, a smart watch, a smart bracelet, an electronic instrument dial, a robot interaction panel, and the like.

The OLED special-shaped screen adopted by the display device of the embodiment of the disclosure is the same as the OLED special-shaped screen in the embodiment of the OLED special-shaped screen, and therefore, the OLED special-shaped screen has the same beneficial effects and is not repeated herein.

It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments described in this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.

Claims

1. An OLED shaped screen having a display area, the OLED shaped screen comprising pixels distributed in an array in the display area, each of the pixels comprising at least three color sub-pixels; wherein at least one of the pixels at an edge region of the display area includes an R sub-pixel, a G sub-pixel, and a B sub-pixel; the R sub-pixel and the G sub-pixel are arranged on the same side of the B sub-pixel along the length direction of the B sub-pixel; the size of the outer contour of the R sub-pixel is the same as that of the outer contour of the G sub-pixel, and the orthographic projection of the R sub-pixel on one long edge of the outer contour of the B sub-pixel does not exceed the long edge;

the R sub-pixel comprises four R sub-pixel units which are independently controlled to emit red light, and the R sub-pixel units are squares with the same size; the four R sub-pixel units are distributed in an array type central symmetry mode;

the G sub-pixel comprises four G sub-pixel units which are controlled to emit green light independently; the G sub-pixel units are squares with the same size; the four G sub-pixel units are distributed in an array type central symmetry mode;

the B sub-pixel comprises four B sub-pixel units which are controlled to emit green light independently; the B sub-pixel units are rectangles with the same size; the four sub-pixel units B are distributed in an array type central symmetry mode;

the display area is circular, and the edge area is a sector area which is not less than a preset distance away from the center of the display area;

the OLED dysmorphism screen still includes:

at least two drive circuit layers which are arranged in a stacked mode are arranged in the edge area of the display area; and each layer of the driving circuit layer is provided with a plurality of thin film transistors in an array.

2. The OLED shaped screen as claimed in claim 1, wherein the edge region is the outermost one or more fan-shaped regions of a plurality of fan-shaped regions formed by equally dividing the display area along a radius.

3. A display device, characterized by comprising the OLED special-shaped screen as claimed in any one of claims 1-2.