WO2020087859A1

WO2020087859A1 - Display screen and display terminal

Info

Publication number: WO2020087859A1
Application number: PCT/CN2019/080663
Authority: WO
Inventors: 楼均辉; 宋艳芹
Original assignee: 云谷（固安）科技有限公司
Priority date: 2018-10-31
Filing date: 2019-03-29
Publication date: 2020-05-07
Also published as: CN209071333U

Abstract

A display screen, comprising: an AMOLED screen provided in a first display region, the AMOLED screen comprising a first pixel layer, the first pixel layer comprising a plurality of first pixel units, and each of the first pixel units comprising a plurality of sub-pixels; and a PMOLED screen provided in a second display region adjacent to the first display region, the PMOLED screen comprising a first electrode layer and a second pixel layer provided on the first electrode layer, the first electrode layer comprising a plurality of first electrode strips, each of the first electrode strips comprising a plurality of first electrodes and connecting lines connecting the plurality of first electrodes, the second pixel layer comprising a plurality of second pixel units, each of the second pixel units comprising a plurality of sub-pixels, each sub-pixel being provided on one first electrode, and sub-pixels located on a plurality of first electrodes of the same first electrode strip having the same color. The arrangement rule of the plurality of sub-pixels in the first display region is the same as the arrangement rule of the plurality of sub-pixels in the second display region.

Description

Display screen and display terminal

Cross-reference of related applications

This application requires the priority of the Chinese patent application filed on October 31, 2018, with the application number 201821786352.4 and the application name "display screen and display terminal", the entire content of which is incorporated by reference in this application.

Technical field

The present application relates to the field of display technology, in particular to a display screen and a display terminal using the display panel.

Background technique

With the rapid development of electronic devices, users have higher and higher requirements on the screen ratio, so that the full screen display of electronic devices has attracted more and more attention from the industry. Traditional electronic devices such as mobile phones, tablet computers, etc., due to the need to integrate components such as front camera, earpiece and infrared sensor, etc., you can set the camera, earpiece and infrared sensor in the slotted area by notching the display (Notch) Components, but the slotted area is not used to display the picture, such as the "bangs" screen in the prior art, or the method of opening a hole on the screen, for electronic devices that realize the camera function, external light can pass through the screen Into the photosensitive element located at the bottom of the screen. However, these electronic devices are not full screens in the true sense, and cannot be displayed in various areas of the entire screen, for example, the screen cannot be displayed in the camera area.

Summary of the invention

According to various embodiments, a display screen and a display terminal are provided.

A display screen including:

An AMOLED screen, disposed in the first display area, the AMOLED screen includes a first pixel layer, the first pixel layer includes a plurality of first pixel units, and each first pixel unit includes a plurality of sub-pixels; and

A PMOLED screen is provided in a second display area adjacent to the first display area, the PMOLED screen includes a first electrode layer and a second pixel layer on the first electrode layer, the first electrode layer It includes a plurality of first electrode strips, each of the first electrode strips includes a plurality of first electrodes and a connecting line connecting the plurality of first electrodes, the second pixel layer includes a plurality of second pixel units, each The two-pixel unit includes a plurality of sub-pixels, each sub-pixel is disposed on a first electrode, and each sub-pixel on the plurality of first electrodes located on the same first electrode strip has the same color;

The arrangement rules of the plurality of sub-pixels in the first display area are the same as the arrangement rules of the plurality of sub-pixels in the second display area.

A display terminal, including:

Equipment body with device area; and

The above display screen is covered on the device body;

Wherein, the device area is located below the second display area, and the device body includes a photosensitive device disposed in the device area and collecting light through the second display area.

The details of one or more embodiments of the application are set forth in the drawings and description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims.

BRIEF DESCRIPTION

In order to better describe and explain the embodiments and / or examples of the present application, reference may be made to one or more drawings. Additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed applications, the presently described embodiments and examples, and the best mode currently understood of these applications.

FIG. 1 is a schematic diagram of a display screen according to an embodiment.

FIG. 2 is a schematic diagram of the first pixel unit or the second pixel unit of the display screen shown in FIG. 1.

FIG. 3 is a schematic diagram of a first electrode bar according to an embodiment.

4 is a schematic diagram of a first electrode bar and a second electrode bar according to an embodiment.

5 is a schematic diagram of a second electrode layer according to an embodiment.

6 is a schematic diagram of sub-pixels of the second pixel layer in an embodiment.

7 is a schematic diagram of a display terminal according to an embodiment.

8 is a schematic diagram of the device body in an embodiment.

detailed description

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described here are only used to explain this application, and should not be considered as a limitation to this application.

The driving methods and device structures of passive matrix organic light emitting diode (Passive Matrix Organic Light Emitting Diode, PMOLED) screen and active matrix organic light emitting diode panel (Active Matrix Organic Light Emitting Diode, AMOLED) screen are very different. For example, the PMOLED screen has no TFT backplane, so that the light transmittance is high, so the transparent display can use the PMOLED display with high transparency, and to ensure the display effect, the other areas can still use the AMOLED display with more excellent light emitting performance.

In addition, the anode and cathode of the PMOLED screen are generally strip-shaped, that is, the first electrode strip and the second electrode strip, a plurality of first electrode strips and a plurality of second electrode strips crisscross, and the first electrode strip and the second The position where the electrode strips overlap forms a sub-pixel. Based on this, the pixel arrangement structure of the PMOLED screen is generally the traditional real RGB structure, that is, the red, green, and blue sub-pixels are alternately arranged in the row direction, and the pixel arrangement of each row is the same.

Unlike the PMOLED screen, the anode of the AMOLED screen is generally patterned and is formed corresponding to each sub-pixel. The cathode of the AMOLED screen is generally the entire surface electrode, covering the entire TFT array substrate provided with multiple sub-pixels. The TFT array substrate may include a substrate, a buffer layer, a thin film transistor, and other structures. With the increasing resolution requirements, the pixel arrangement structure of AMOLED screens has various pixel arrangement methods different from the traditional real RGB structure.

It can be seen that the pixel arrangement of the PMOLED screen and the AMOLED screen are different. Therefore, when forming the PMOLED screen and the AMOLED screen on the same substrate, it is necessary to separately manufacture the PMOLED and AMOLED in different regions, which will inevitably increase costs, reduce productivity and yield. Based on this, the present application provides a display screen, which can solve the above problems well.

Please refer to FIG. 1, an embodiment of the present application provides a display screen 100. The display screen 100 is a composite screen of an AMOLED screen and a PMOLED screen.

Referring to FIG. 1, the display screen 100 has a first display area 101 and a second display area 102. At least part of the second display area 102 is completely surrounded by the first display area 101. The shape of the second display area 102 may be a circle, an oval, a rectangle, or other irregular graphics. In an embodiment, the second display area 102 may be disposed in the top middle area of the display screen, and the second display area 102 is rectangular, so that there is three-face contact with the first display area 101, as shown in FIG. 1. The second display area 102 may also be disposed in the left middle area or the right middle area of the first display area 101. In another embodiment, the second display area 102 may also be disposed inside the first display area 101 so that the second display area 102 is completely surrounded by the first display area 101. In FIG. 1, the number of the first display area 101 and the second display area 102 are both one. In other embodiments, the number of the first display area 101 and the second display area 102 may be two or two the above. Both the first display area 101 and the second display area 102 are used to display dynamic or static pictures.

The AMOLED screen 101 'is disposed in the first display area 101, and the PMOLED screen 102' is disposed in the second display area 102. Specifically, the AMOLED screen 101 'located in the first display area 101 has a first pixel layer. The first pixel layer includes a plurality of first pixel units. Each first pixel unit includes a plurality of sub-pixels, and the sub-pixels are arranged in the first display area 101 according to a first rule.

Understandably, for the first display area 101, the position of each sub-pixel of the AMOLED screen 101 'is patterned to form an independent sub-pixel electrode (also called an anode), and then an independent sub-pixel is formed on the sub-pixel electrode, Then, a counter electrode (also called a cathode) is formed on the entire sub-pixel, and the counter electrode may be a surface electrode. Specifically, a Thin Film Transistor (TFT) array (not shown), a pixel defining layer (not shown), an anode (not shown), the first pixel layer and the cathode are sequentially formed on the substrate of the AMOLED screen 101 ' To form an AMOLED screen 101 '. It should be noted that the anode of the first display area 101 is provided in a one-to-one correspondence with the thin film transistors and organic light emitting structures of the TFT array. Wherein, a sub-pixel is a light-emitting structure, and a sub-pixel may include a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, and Electron injection layer etc.

The PMOLED screen 102 'located in the second display area 102 includes a first electrode layer and a second pixel layer on the first electrode layer. It can be understood that other film layers such as a pixel defining layer may also be provided between the first electrode layer and the second pixel layer, which will not be repeated here.

Please refer to FIG. 3, the first electrode layer includes a plurality of first electrode bars 120. Each first electrode bar 120 includes a plurality of first electrodes 121 and a connection line 122 connecting the plurality of first electrodes 121.

The second pixel layer includes a plurality of second pixel units. Each second pixel unit includes a plurality of sub-pixels, and the plurality of sub-pixels in the second pixel layer are arranged in a second rule. The second rule is the same as the first rule, so the pixel arrangement structure in the first display area 101 and the second display area 102 is the same. Each first electrode 121 is provided with a sub-pixel, and the sub-pixels above the first electrode 121 of the same first electrode bar 120 have the same color.

In this embodiment, the pixels in the first display area 101 and the second display area 102 are arranged in the same manner, so that the arrangement of the second pixel arrangement structure is the same as the arrangement of the first pixel arrangement structure, and The driving method is different to achieve normal display. In addition, the same pixel mask can be used to form the first pixel layer and the second pixel layer of the first display area and the second pixel area in the same process step, without using two different masks to form two evaporation layers, thus reducing The use of the mask plate and the simplification of the process, thereby reducing costs and improving productivity and yield. At the same time, the display screen 100 of this embodiment can realize a full-screen display in a true sense.

It is understandable that both the first pixel arrangement structure and the second pixel arrangement structure can be set to the traditional real RGB structure, but they are driven by different driving methods.

Further, in this embodiment, the second pixel arrangement structure is set to the same pixel arrangement structure as the first pixel arrangement structure and different from the real RGB structure.

Specifically in the example shown in FIG. 2, the plurality of sub-pixels in the first display area 101 and the second display area 102 are arranged in multiple columns, and the sub-pixels in each column include multiple sub-pixels of different colors that are alternately and sequentially arranged in the column direction 103 Pixels.

Specifically, the first pixel unit and the second pixel unit each include a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113 of different colors, and the first sub-pixel 111, the second sub-pixel 112, and the The third sub-pixels 113 are alternately and sequentially arranged in the column direction 103.

One of the sub-pixels in any column and the sub-pixels of the same color among the sub-pixels in the adjacent column are staggered in the row direction perpendicular to the column direction 103.

Further, each sub-pixel in any column of sub-pixels is interleaved adjacent to two sub-pixels in the sub-pixels in the adjacent column. Specifically, the first sub-pixel 111 in any column of sub-pixels is interleaved adjacent to the second sub-pixel 112 and the third sub-pixel 113 in the sub-pixels in the adjacent column. The second sub-pixel 112 in any column of sub-pixels is interleaved adjacent to the first sub-pixel 111 and the third sub-pixel 113 in the sub-pixels in the adjacent column. The third sub-pixel 113 in any column of sub-pixels is interleaved adjacent to the first sub-pixel 111 and the second sub-pixel 112 in the sub-pixels in the adjacent column.

In this way, the plurality of sub-pixels form a plurality of pixel units arranged in a matrix. Each pixel unit includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. One of the first subpixel 111, the second subpixel 112, and the third subpixel 113 is a red subpixel, one is a green subpixel, and the other is a blue subpixel. In this way, the sub-pixels of the same color in the adjacent two columns of sub-pixels are offset from each other. Specifically in the example shown in FIG. 2, the first subpixel 111 is a green subpixel, the second subpixel 112 is a red subpixel, and the third subpixel 113 is a blue subpixel.

For the second display area 102, the position of the PMOLED screen corresponding to each sub-pixel is patterned to form part of the anode, and at the same time, the sub-pixel is connected to two sub-pixels of the same color in the two adjacent columns of sub-pixels by patterning. That is to say, one of the sub-pixels in the middle column is connected to a sub-pixel of the same color in the adjacent sub-pixel on the left, and is connected to a sub-pixel of the same color in the adjacent sub-pixel on the right, thereby forming multiple The first electrode strips 120 are connected to one sub-pixel of the same color in each column of sub-pixels. Wherein, a sub-pixel is a light-emitting structure, and a sub-pixel may include a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, and Electron injection layer etc.

The study found that the pixel arrangement structure shown in FIG. 2 is very advantageous for forming the structure of the first electrode bar 120 shown in FIGS. 3-4, so that the second display area 102 can be arranged in the pixel arrangement structure shown in FIG. Based on PMOLED driving structure and driving method. It can be understood that the pixel defining layer of the first display area 101 and the pixel defining layer of the second display area 102 may be formed in the same process step, and the sub-pixels of the two display areas of the first display area 101 and the second display area 102 may also be Forming in the same process step not only reduces the productivity, but also facilitates the overall formation of a flatter cathode for the display screen 100, which in turn facilitates the subsequent formation of a flat package structure to ensure package performance.

The first electrode bar 120 has a bent structure. More specifically, the first electrode 121 and the connection line 122 of the first electrode bar 120 are arranged in a “W” -shaped fold line.

It can be understood that the connecting portion 122 may be linear or arc-shaped. Specifically, in the column direction, the bending direction of the bending structure on the first electrode bar 120 is the same. In this way, the arrangement tightness of the first electrode strips 120 can be easily improved, thereby saving space, and further facilitating the close arrangement of pixels, thereby improving pixel resolution.

In the column direction 103, the spacing between any two adjacent first electrode strips 120 is equal. That is to say, the body portion 121 and the connecting portion 122 of any two adjacent first electrode bars 120 are the same in the column direction 103, and the specifications including the size and width are the same, which is conducive to the close arrangement of the first electrode bars 120 Cloth, save space. Specifically, between any two adjacent first electrode strips 120 connected to the first sub-pixel 111 is provided a first electrode strip 120 connected to the second sub-pixel 112 and a first electrode connected to the third sub-pixel 113 Article 120. Specifically in this example, the first electrode bar 120 is an anode bar.

Please refer to FIG. 4. Further, the PMOLED screen further includes a second electrode layer provided on the second pixel layer.

The second electrode layer includes a plurality of second electrode strips 130, and each second electrode strip 130 is disposed corresponding to each column of sub-pixels, so that one sub-pixel is disposed at a position where the first electrode strip 120 and the second electrode strip 130 overlap. In this way, the sub-pixels are connected to the second electrode strip 130 and the first electrode strip 120 at the same time, so that the pixels in the PMOLED screen can be scanned and lit in a conventional manner. In one embodiment, the second electrode layer is a cathode layer.

5 is a schematic structural diagram of a second electrode layer according to an embodiment. Referring to FIG. 5, in an embodiment, the second electrode strip 130 is a plurality of circular shapes connected to each other. The plurality of second electrode strips 130 extend in parallel in the same direction, and there is a gap between two adjacent second electrode strips 130. In the extending direction of the second electrode strip 130, the width of the second electrode strip 130 changes continuously or intermittently, and the pitch changes continuously or intermittently. Specifically, in the extending direction of the second electrode bar 130, the widths of the plurality of connected circular traces continuously change or intermittently change. Continuously changing width means that the widths at any two adjacent positions on multiple connected circular traces are different. The discontinuous change in width means that the second electrode strip 130 has the same width at two adjacent positions in a part of the area, and the two adjacent positions in the partial area have different widths. By designing the second electrode strip 130 as a plurality of connected circular traces, when the external light passes through the second electrode strip 130, the positions of the diffraction fringes generated at different positions of the second electrode strip 130 are different. The diffraction fringes at different positions cancel each other, which can effectively reduce the diffraction effect, thereby ensuring that when the camera is disposed below the second display area 102, the captured graphics have high definition.

6 is a schematic structural diagram of sub-pixels of a second pixel layer in an embodiment. Referring to FIG. 6, in an embodiment, the shape of the sub-pixel includes any one of a circle, an ellipse, a dumbbell, and a gourd. By setting the sub-pixels to be circular or elliptical, dumbbell-shaped or gourd-shaped, the diffraction effect can also be weakened. In addition, the circular, elliptical, dumbbell or gourd shape can maximize the area of each sub-pixel to further increase the light transmittance. An embodiment of the present application further provides a display terminal. 7 is a schematic structural diagram of a display terminal in an embodiment. The display terminal includes a device body 200 and the aforementioned display screen 100. The display screen 100 is provided on the device body 200 and connected to the device body 200. The display screen 100 may use the display screen in any of the foregoing embodiments to display static or dynamic images.

FIG. 8 is a schematic structural diagram of the device body 200 in an embodiment. In this embodiment, the device body 200 may be provided with a device area 201 and a function area 202. A photosensitive device 300 such as a camera and a light sensor may be provided in the device area 201. At this time, the second display area 102 of the display screen 100 corresponds to the device area 201, so that the above-mentioned photosensitive device 300 such as a camera and a light sensor can collect external light through the second display area 102, etc. operating.

In one embodiment, in order to improve the light transmittance, no polarizing film may be provided in the second display area 102. Therefore, the quality of the image captured by the camera on the display terminal can be effectively improved, and at the same time, the accuracy and sensitivity of the light sensor to sense external light can also be improved.

The above display terminal may be a digital device such as a mobile phone, a tablet computer, a palmtop computer, an iPod.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To simplify the description, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered within the scope of this description.

The above-mentioned embodiments only express several implementation manners of the present application, and their descriptions are more specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all fall within the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be subject to the appended claims.

Claims

A display screen including:

An AMOLED screen, disposed in the first display area, the AMOLED screen includes a first pixel layer, the first pixel layer includes a plurality of first pixel units, and each first pixel unit includes a plurality of sub-pixels; and

A PMOLED screen is provided in a second display area adjacent to the first display area, the PMOLED screen includes a first electrode layer and a second pixel layer on the first electrode layer, the first electrode layer It includes a plurality of first electrode strips, each of the first electrode strips includes a plurality of first electrodes and a connecting line connecting the plurality of first electrodes, the second pixel layer includes a plurality of second pixel units, each The two-pixel unit includes a plurality of sub-pixels, each sub-pixel is disposed on a first electrode, and each sub-pixel on the plurality of first electrodes located on the same first electrode strip has the same color;

The arrangement rules of the plurality of sub-pixels in the first display area are the same as the arrangement rules of the plurality of sub-pixels in the second display area.
The display screen according to claim 1, wherein the plurality of sub-pixels located in the first display area and the plurality of sub-pixels located in the second display area are arranged in multiple columns, and The sub-pixels include sub-pixels of different colors that are alternately and sequentially arranged in the column direction. One sub-pixel in any column of sub-pixels and the sub-pixels of the same color in the sub-pixels in the adjacent column are staggered in the row direction perpendicular to the column direction .
The display screen according to claim 2, wherein the first pixel unit and the second pixel unit each include a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors, the first sub-pixel The pixels, the second subpixel and the third subpixel are alternately and sequentially arranged in the column direction. The first subpixel in any one column of subpixels and the second subpixel and the first Three sub-pixels are interleaved adjacently, the second sub-pixel in any column of sub-pixels is interleaved adjacent to the first sub-pixel and the third sub-pixel in adjacent sub-pixels, in any column of sub-pixels The third sub-pixel is interleaved adjacent to the first sub-pixel and the second sub-pixel in the adjacent sub-pixels in a column.
The display screen according to claim 1, wherein the first electrode strip is a bent structure.
The display screen according to claim 4, wherein the bending direction of the bending structure is the same in the column direction.
The display screen according to claim 5, wherein in the column direction, the spacing between two adjacent first electrode bars is equal.
The display screen according to claim 1, wherein the shape of the sub-pixel includes any one of a circle, an ellipse, a dumbbell, and a gourd.
The display screen according to claim 1, wherein the connecting line is a straight line.
The display screen according to claim 1, wherein the connection line is an arc.
The display screen according to claim 2, wherein the PMOLED screen further includes a second electrode layer provided on the second pixel layer, the second electrode layer includes a plurality of second electrode strips, and the The second electrode strips extend in parallel in the same direction, and there is a gap between two adjacent second electrode strips. In the extending direction of the second electrode strips, the width of the second electrode strips continuously changes or Intermittently changing, and the pitch is continuously changing or intermittently changing, each second electrode strip is arranged corresponding to a column of sub-pixels, and each sub-pixel is arranged at a position where the second electrode strip and the first electrode overlap.
The display screen according to claim 10, wherein the shape of the second electrode strip is a plurality of contiguous circles.
The display screen according to claim 1, wherein the AMOLED screen includes a TFT array, a pixel defining layer, an anode, the first pixel layer, and a cathode sequentially formed on the substrate.
The display screen according to claim 12, wherein one of the sub-pixels of the AMOLED screen is a light-emitting structure, and one of the sub-pixels includes a hole injection layer and a hole sequentially provided on the pixel defining layer Transport layer, electron blocking layer, light emitting layer, hole blocking layer, electron transport layer and electron injection layer.
The display screen according to claim 1, wherein a pixel defining layer is further provided between the first electrode layer and the second pixel layer of the PMOLED screen.
The display screen according to claim 1, wherein the plurality of sub-pixels are arranged in a real RGB structure in both the first display area and the second display area.
The display screen according to claim 3, wherein the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel 113 is a blue sub-pixel.
The display screen according to claim 1, wherein a first electrode bar connecting the second sub-pixel and a connecting electrode are provided between two adjacent first electrode bars connecting the first sub-pixel The first electrode strip of the third sub-pixel.
A display terminal, including:

Equipment body with device area; and

The display screen according to claim 1, covered on the device body;

Wherein, the device area is located below the second display area, and the device body includes a photosensitive device disposed in the device area and collecting light through the second display area.