CN115185128B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN115185128B CN115185128B CN202210832366.XA CN202210832366A CN115185128B CN 115185128 B CN115185128 B CN 115185128B CN 202210832366 A CN202210832366 A CN 202210832366A CN 115185128 B CN115185128 B CN 115185128B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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Abstract
The embodiment of the application discloses a display panel, a manufacturing method thereof and a display device. In a specific embodiment, the display panel includes a first display substrate and a second display substrate disposed on a light emitting side of the first display substrate, a resolution of the first display region is smaller than a resolution of the second display region, a number of pixels of the first display region is proportional to a number of pixels of the second display region, the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, and a size of pixels in the second pixel region is larger than a size of pixels in the first pixel region. According to the embodiment, the first display area is arranged to comprise the first pixel area and the second pixel area surrounding the first pixel area, and the pixel size of the second pixel area is larger than that of the first pixel area, so that alignment deviation of the first display area and the second display area is avoided, and the problem that display cannot be achieved due to the fact that the edge display is lost while the frame area is occupied excessively is avoided.
Description
Technical Field
The application relates to the technical field of display. And more particularly, to a display panel, a method of manufacturing the same, and a display device.
Background
In the liquid crystal display technology, in order to improve the contrast ratio, a design of a BD Cell (BOE Dual Cell, double-screen) is proposed, a double-layer liquid crystal screen is attached together, a lower layer is a gray display screen (Mono Cell), an upper layer is a Color display screen (Color Cell), the Color display screen is positioned on the light emitting side of the gray display screen, the two are used as a whole, the contrast ratio of each display screen in the BD Cell reaches 1000:1, and the contrast ratio after lamination of the two can reach 1000 2 1 is far larger than a single-screen product.
However, when BD Cell is manufactured, two display screens need to be aligned and attached together, due to the existence of the alignment tolerance of the device, the gray display screen and the color display screen are easy to be misplaced, as shown in fig. 1, when the two display screens are misplaced, the backlight of the area in the dashed frame in the color display screen cannot pass through, and further the area cannot be displayed, so that the display image is lost. Meanwhile, because the resolution of the gray display screen is far smaller than that of the color display screen, the resolution can reach 1:4, 1:6, 1:8 or even larger difference, if the mode of increasing the number of pixels of the lower gray display screen is adopted, the frame of the gray display area can be seriously squeezed, the wiring of the non-display area is influenced, and the influence on narrow frame products is larger.
Accordingly, it is desirable to provide a display product capable of avoiding the problem of poor display of misalignment with minimal influence on the frame.
Disclosure of Invention
The application aims to provide a display panel, a manufacturing method thereof and a display device, which are used for solving at least one of the problems existing in the prior art.
In order to achieve the above purpose, the application adopts the following technical scheme:
the first aspect of the application provides a display panel, comprising a first display substrate and a second display substrate arranged on the light-emitting side of the first display substrate, wherein the display area of the first display substrate is a first display area, the display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region.
In some of the alternative embodiments of the present application,
the second display area is in the range of the first display area, and the area of the second display area is smaller than that of the first display area,
and in the direction from the edge of the second display area to the edge of the first display area, the distance between the edge of the second display area and the edge of the second display area is more than or equal to 0.3mm.
In some alternative embodiments, the number of pixels in the second pixel region is less than or equal to 2 in a direction from the edge of the first pixel region to the edge of the second pixel region.
In some alternative embodiments, the ratio of the size of the pixels in the second pixel region to the size of the pixels in the first pixel region is greater than 1 and less than or equal to 1.5.
In some alternative embodiments, the first display substrate further comprises at least one driving chip disposed in the non-display area, the driving chip comprising a plurality of sets of driving pins for driving the columns of pixels in the first display area, each set of driving pins comprising an R pin, a G pin and a B pin controlled independently of each other,
the display panel further includes a driving signal line electrically connected to each column of pixels,
in each group of driving pins, at least one pin of the R pins, the G pins and the B pins is electrically connected with a corresponding driving signal line, and the quantity of the two adjacent groups of vacant pins is equal.
In some of the alternative embodiments of the present application,
in each group of driving pins, one of the R pin, the G pin, and the B pin is electrically connected to a corresponding one of the driving signal lines.
In some alternative embodiments, the first display substrate further comprises at least one driving chip disposed in the non-display area, the driving chip comprising a plurality of sets of driving pins for driving the columns of pixels in the first display area, each set of driving pins comprising an R pin, a G pin and a B pin controlled independently of each other,
the display panel also comprises a driving signal line electrically connected with each column of pixels, and each pin in the plurality of groups of driving pins is electrically connected to the driving signal line in a one-to-one correspondence manner.
In some alternative embodiments, the first display substrate is a gray scale display substrate and the second display substrate is a color display substrate.
A second aspect of the application provides a display device comprising a display panel as described above.
A third aspect of the present application provides a method of manufacturing a display panel as described above, comprising:
forming a first display substrate;
forming a second display substrate;
the first display substrate and the second display substrate are aligned and bonded together, the second display substrate is arranged on the light emitting side of the first display substrate,
wherein the display area of the first display substrate is a first display area, the display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region.
The beneficial effects of the application are as follows:
the application aims at the existing problems at present, a display panel, a manufacturing method thereof and a display device are formulated, and by providing a first display substrate and a second display substrate arranged on the light emitting side of the first display substrate, the resolution of the first display region is smaller than that of the second display region, the number of pixels of the first display region is proportional to that of the second display region, the display region of the first display substrate comprises a first pixel region and a second pixel region surrounding the first pixel region, the pixel size of the second pixel region is larger than that of the first pixel region, and each edge of the first display region extends beyond the edge of the second display region, so that the alignment deviation of the first display region and the second display region is avoided under the condition that the number of pixels in the first display substrate and the second display substrate is not changed, the problem that the edge display is lost and the frame wiring design of a narrow product is facilitated, and the display panel has wide application prospect;
in addition, through further optimizing the channel selection mode of the display driving chip, the driving signal wiring length connected with the driving chip can be shortened and the number of the driving chips can be reduced according to the needs, and the design of the frame driving circuit is optimized.
Drawings
The following describes the embodiments of the present application in further detail with reference to the drawings.
FIG. 1 is a schematic view showing a display panel according to the related art in which a gray display screen and a color display screen are misaligned;
fig. 2 shows a schematic top view of a display panel according to an embodiment of the application;
fig. 3 shows a schematic top view of a display panel according to another embodiment of the application;
fig. 4 is a schematic diagram showing a driving manner of a display panel according to an embodiment of the present application;
FIG. 5 is a schematic diagram showing the layout of the display panel according to the driving method shown in FIG. 4;
fig. 6 is a schematic diagram showing a driving manner of a display panel according to another embodiment of the present application;
FIG. 7 is a schematic diagram showing the layout of the display panel according to the driving method shown in FIG. 6;
fig. 8 is a schematic diagram showing a driving manner of a display panel according to another embodiment of the present application;
fig. 9 shows a schematic cross-sectional view of a display panel according to an embodiment of the present application.
Detailed Description
In order to more clearly illustrate the present application, the present application will be further described with reference to examples and drawings. Like parts in the drawings are designated by the same or similar reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this application is not limited to the details given herein.
It should be noted that, in the present application, the terms "having," "including," "comprising," and the like are all open-ended, that is, when a module is described as "having," "including," or "comprising" a first element, a second element, and/or a third element, it means that the module includes other elements in addition to the first element, the second element, and/or the third element. In addition, ordinal numbers such as "first", "second", and "third" in the present application are not intended to limit a specific order, but merely to distinguish individual portions.
The terms "on … …", "formed on … …" and "disposed on … …" as used herein may mean that one layer is formed directly on or disposed on another layer, or that one layer is formed indirectly on or disposed on another layer, i.e., that other layers are present between the two layers.
Based on one of the above problems, an embodiment of the present application provides a display panel, including a first display substrate and a second display substrate disposed on a light emitting side of the first display substrate, wherein a display area of the first display substrate is a first display area, a display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region.
In some alternative embodiments, by providing the first display substrate and the second display substrate disposed on the light emitting side of the first display substrate, the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area, and the display area of the first display substrate includes a first pixel area and a second pixel area surrounding the first pixel area, and the pixel size of the second pixel area is larger than the pixel size of the first pixel area, each edge of the first display area extends beyond the edge of the second display area, so that alignment deviation of the first display area and the second display area can be avoided without changing the number of pixels in the first display substrate and the second display substrate, the problem that display cannot be caused by edge display loss is avoided, and the frame wiring design of a narrow frame product is facilitated.
In a specific example, the display panel includes a first display substrate and a second display substrate, where the second display substrate is located at a light emitting side of the first display area and receives a backlight display image transmitted through the first display substrate. In the embodiment of the application, the first display substrate is a gray display substrate, and the second display substrate is a color display substrate; of course, the present application is not limited to the specific embodiments, and other display panels that display by laminating the first display substrate and the second display substrate using two laminated substrates satisfy the limitations of the present application.
Specifically, referring to fig. 2, the display area of the first display substrate is a first display area AA1, and the display area of the second display substrate is a second display area AA2.
In particular, the resolution of the first display area AA1 is smaller than that of the second display area AA2 and the number of pixels of the first display area is proportional to that of the second display area, and the first display area AA1 includes a first pixel area P1-1 located in the middle and a second pixel area P2-1 surrounding the first pixel area P1-1. Although not shown in the drawings, the first pixel region P1-1 includes pixels arranged in an array, and the pixels of the second pixel region P2-1 are located at the periphery of the first pixel region P1-1 and arranged around the pixels of the first pixel region P1-1. Referring to fig. 1, the pixel size in the second pixel region P2-1 is larger than that in the first pixel region.
The first display area AA1 generally corresponds to several pixels in the second display area AA2, and the ratio of the pixels in the first display area AA1 to the pixels in the second display area AA2 is generally 1:4, 1:6, 1:8, etc.
In this case, if the pixel size of the first pixel region P1-1 is equal to the pixel size of the second pixel region P2-1, the size of the second display region AA2 is also equal to the size of the first display region AA1, and because the alignment device has a device alignment error, the two display substrates have a problem of lamination accuracy during lamination, which will cause misalignment between the first display region and the second display region.
In the embodiment of the application, the pixel size in the second pixel area P2-1 is larger than the pixel size in the first pixel area, so that the size of the first display area AA1 is larger than the size of the second display area AA2 by using the larger pixel size in the second pixel area P2-1 under the condition that the pixel proportion (namely the pixel number) of the first display area AA1 and the second display area AA2 is kept unchanged, and even if the first display substrate and the second display substrate are in alignment deviation, the backlight can be ensured to be incident to the second display area AA2 of the second display substrate through the first display area AA1 of the first display substrate, so that the problem that an image cannot be displayed due to no light passing is avoided, and the display loss of the image is avoided.
More importantly, under the condition that the first display area AA1 and the second display area AA2 are still proportional, namely under the condition that the number of pixels of the first display area AA1 and the second display area AA2 is kept unchanged, the size of the first display area AA1 is larger than that of the second display area AA2 in a mode that the pixel size of the second pixel area P2-1 is larger than that of the first pixel area P1-1, so that the problem of alignment deviation is solved, the distance that the first display area AA1 extends beyond the second display area AA2 is controlled to be a non-integer multiple of the pixel width of the first display area AA, the influence of the problem of alignment deviation on the frame of a first display substrate is reduced, and the influence of redundant large-size pixels on the frame is avoided for display products with larger pixel ratios of the first display area AA1 and the second display area AA2 of 1:4, 1:6, 1:8 and the like, so that the wide application prospect is avoided.
Optionally, the conventional alignment tolerance range is +/-0.2 mm to +/-0.3 mm, the alignment tolerance with the worst precision is +/-0.3 mm, in order to ensure that no backlight passing condition exists on the second display substrate under the condition of the maximum alignment tolerance, the second display area AA2 is set to fall within the range of the first display area AA1, the area of the second display area is smaller than that of the first display area, and in the direction from the edge of the second display area to the edge of the first display area, the distance between the edge of the second display area AA2 and the edge of the second display area is greater than or equal to 0.3mm.
According to the application, the pixel size in the second pixel area AA2 can be controlled, so that the distance between the edge of the second display area AA2 and the edge of the second display area AA2 is larger than or equal to 0.3mm in the direction from the edge of the second display area AA2 to the edge of the first display area AA1, namely in the direction from the edge of the first pixel area to the edge of the second pixel area, and the pixel size in the second pixel area AA2 is set, so that the distance between the edge of the second display area AA2 and the edge of the second display area AA2 is smaller than the pixel width in the first pixel area P1-1 while the distance range is met, thereby avoiding the occupation of the frame space, avoiding the influence on the frame wiring and being beneficial to the narrow frame design.
In order not to affect the display quality of the edge image, it is preferable that the number of pixels of the second pixel region P2-1 is 2 or less in the direction from the edge of the first pixel region P1-1 to the edge of the second pixel region P2-1.
With this arrangement, since only 2 pixels or less undergo a size change, and it is difficult for the human eye to distinguish the display difference in the size, it is possible to avoid that the large-size pixels in the second pixel region and the pixel points in the second display region are not aligned according to the intermediate region, resulting in a deviation that affects the viewing quality of the human eye.
In other alternative embodiments, the ratio of the size of the pixels in the second pixel area to the size of the pixels in the first pixel area is greater than 1 and less than or equal to 1.5, and by this arrangement, the display quality of the edge image can be ensured, and the display difference that can be distinguished by human eyes in the second pixel area compared with the first pixel area can be avoided.
Specifically, referring to the embodiment of fig. 2, the number of pixels of the second pixel region P2-1 is 1 in the direction from the edge of the second display region AA2 to the edge of the first display region AA1, i.e., the second pixel region P2-1 is one circle of pixels surrounding the first pixel region P1-1. It can be seen that at this time, the ratio of the size of the pixels in the second pixel region P2-1 to the size of the pixels in the first pixel region P1-1 is greater than 1 and less than 1.5, and the distance w1 between the edges of the first display region AA1 and the second display region AA2 is smaller than the pixel width in the first pixel region P1-1 in the direction from the edge of the second display region AA2 to the edge of the first display region AA 1.
It can be seen that if the ratio of the number of pixels in the second display area AA2 to the number of pixels in the first display area AA1 is smaller, for example, 1:6, 1:8, or even smaller, the distance w1 can be larger than the alignment tolerance of the alignment device and even can be larger than or equal to 0.3mm as long as the second pixel area P2-1 is set to one circle of pixels, so that the problem of image display loss can be avoided without occupying too much frame area.
More specifically, referring to fig. 3, the number of pixels of the second pixel region P2-2 is 2 in the direction from the edge of the second display region AA2 to the edge of the first display region AA1, i.e., the second pixel region P2-2 is two circles of pixels surrounding the first pixel region P1-2. It can be seen that at this time, the ratio of the pixel size in the second pixel region P2-2 to the size in the first pixel region P1-2 is also greater than 1 and less than 1.5. In addition, when two circles of pixels are disposed in the second pixel region P2-2, the pixel size of each circle of pixels may be appropriately adjusted such that the pixel size is relatively smaller with respect to one circle of pixels, the display difference between the edge region and the middle is smaller in the visual sense, and the distance w2 between the edge of the first display region AA1 and the edge of the second display region AA2 is increased in the direction from the edge of the second display region AA2 to the edge of the first display region AA1 by the additive effect of the two circles. As long as the arrangement is reasonable, w2 can still be larger than the pixel width in the first pixel region P1-2, but can be smaller than 2 times the pixel width in the first pixel region P1-2.
It can be seen that, by this arrangement, if the ratio of the number of pixels in the second display area AA2 to the number of pixels in the first display area AA1 is not too small, for example, 1:4, then by setting the second pixel area P2-2 to two circles of pixels, the size w2 is larger than the width of one pixel in the first pixel area P1-2, but smaller than the width of two pixels, so that the distance w2 can be larger than the alignment tolerance of the alignment device, for example, the alignment tolerance can be larger than or equal to 0.3mm, and the problem of image display loss can be avoided without occupying too much frame area.
By setting the size and the number of the pixels in the second pixel area, the image display problem caused by the alignment tolerance of the device can be avoided, and meanwhile, the excessive occupation of the part extending beyond the edge of the second display area in the first display area is avoided as much as possible, so that the narrow frame design is facilitated.
It should be noted that, the pixel layout of the second pixel area is only given by referring to the examples of fig. 2 and fig. 3, and the pixel sizes of the first circle of pixels and the second circle of pixels in the second pixel area are the same, but this is not limitative, the pixel layout manner may be changed in specific applications, the first circle of pixels and the second circle of pixels may also be different, and especially the pixels located in the corner area of the display area may be adjusted and changed according to specific sizes, which is not described herein again.
On the other hand, considering that there is currently no separate display driving chip for the first display substrate as a gray scale display substrate among the first display substrate and the second display substrate which are stacked, the display driving chip for the gray scale display substrate generally adopts an RGB display driving chip for driving the second display substrate as a color display substrate, and in order to accommodate the display needs of a narrow frame and a large size, the present application proposes various driving designs.
Specifically, the first display substrate further comprises at least one driving chip arranged in the non-display area, the driving chip comprises a plurality of groups of driving pins for driving each column of pixels in the first display area, each group of driving pins comprises an R pin, a G pin and a B pin which are controlled independently of each other, namely, the driving chip is an RGB display driving chip; the display panel further includes a driving signal line electrically connected to each column of pixels in the first display area AA 1.
In some alternative embodiments, referring to fig. 4, the connection relationship between the driving pins and the corresponding pixels is shown, and of course, each column of pixels corresponds to substantially one driving signal line. In this embodiment, in each set of driving pins, the respective pins of the plurality of sets of driving pins are electrically connected to the driving signal lines in a one-to-one correspondence.
In this example, an RGB driving method is shown in which the first display substrate is a 6-inch display substrate with resolution 692×543, 692 signal source lines are required, and only 231RGB or 232RGB driving chips are required for the front end. Since part of the driving chips only support even pixels, 232RGB driving chips are employed in this example.
For a specific data driving format, refer to the example shown in fig. 4, for example, the G pins of the first group of driving pins in the driving chip correspond to the pixels in the first column, then sequentially correspond to the subsequent R pins, G pins, and B pins to be sequentially connected to the pixels in each column, finally, because of limitation of the pixel column number, the 231 st group of driving pins only uses the R pins, and the 232 th group of driving pins are empty. With reference to fig. 5, with this driving method, only one chip is needed to satisfy the driving of the first display substrate, or in the same case, a smaller number of chips are used to complete the driving of the first display substrate, so long as the driving chips can be reasonably selected. Of course, this data driving format is merely exemplary, and the first set of driving pins and the second set of driving pins may be left empty in a specific application, and are continuously connected to each column of pixels from the third set of driving pins, which is not described herein.
By utilizing the characteristic that R pins, G pins and B pins in each group of driving pins in the RGB driving chip are mutually independent to control driving signals, the R pins, the G pins and the B pins in the driving chip are respectively connected to pixels in different columns, so that the number of chips can be reduced, and the driving cost is reduced. Such a driving scheme is advantageous in a small-sized display panel where cost sensitivity and wiring have a weak influence on the frame width.
In other alternative embodiments, referring to fig. 6, in each set of driving pins, one pin of the R pin, the G pin, and the B pin is electrically connected to a corresponding one of the driving signal lines, and the number of the two adjacent sets of vacant pins is equal.
Specifically, as shown in the figure, this example still takes the driving mode of the 6-inch display substrate with the resolution 692×543 as the first display substrate as an example, and the driving mode in this embodiment is a single R/G/B driving mode. Referring to fig. 6, in this example, since there are 692 columns of pixels, it is necessary that the driving chip has at least 2076 driving source lines, that is, the driving chip has at least 692 sets of driving pins, and only R pins are selected for use therein. As shown in the figure, the R pins in each set of drive pins are electrically connected to each column of pixels, respectively. Of course, the G pin of each group of driving pins or the B pin of each group of driving pins may be selected.
By driving only one pin in each group of driving pins of the RGB driving chip, only the data of the R pins or the G pins or the B pins in each group of driving pins are required to be collected during signal collection, and the data collection difficulty and the driving difficulty are reduced. Meanwhile, referring to fig. 7, since the single R/G/B driving method requires more sets of driving pins than the RGB driving method, for a display substrate having a relatively large resolution, a plurality of driving chips are required to complete driving of the first display substrate, so that the wiring length of the driving signal lines is greatly reduced, the far-end load is reduced, and the frame width of the set fanout lines is reduced. Such a driving method is advantageous for a large and medium-sized display panel in which resolution is increasing and the frame width is required to be high.
Although the above has been illustrated and described in a single RGB driving method, the present application is not limited thereto. In consideration of the flexibility of driving, the application can simultaneously utilize the independence in each group of driving pins, and in consideration of the length of fan-out wiring, part of driving pins in each group of driving pins in a driving chip can be adopted in the driving process, and part of driving chips adopts single RGB driving and part of driving chips adopts RGB driving.
However, in order to make the pixel display of each column of the first display substrate more uniform in consideration of the uniformity of the driving signals in the driving chip, it is preferable that at least one of the R pins, the G pins and the B pins is electrically connected to a corresponding one of the driving signal lines, and at the same time, the number of adjacent two sets of vacant pins is required to be equal. For example, referring to FIG. 8, R1, G1 of the first set of drive pins may be used to signal D1 and D2, respectively, B1 of the first set of drive pins and R2 of the second set of drive pins are left empty, G2 and B2 of the second set of drive pins are used to signal D3 and D4, respectively, R3 and G3 of the third set of drive pins are left empty, and so on. By the arrangement, the control pins with the same quantity are used for giving the driving data, and the uniformity of driving signals and display is improved.
Based on the same inventive concept, embodiments of the present application also provide a display device including the display panel as described in the above implementation.
Since the display panel included in the display device provided by the embodiment of the present application corresponds to the display panel provided by the above-described several embodiments, the previous embodiment is also applicable to the present embodiment, and will not be described in detail in the present embodiment.
In this embodiment, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a vehicle-mounted display, a digital photo frame or a navigator, and by loading the display panel, the display device can avoid the problem that the image display is lost due to alignment deviation at the edge, which is beneficial to narrow frame design.
Based on the same inventive concept, the embodiment of the present application further provides a method for manufacturing the display panel of the above embodiment, including:
forming a first display substrate;
forming a second display substrate;
the first display substrate and the second display substrate are aligned and bonded together, the second display substrate is arranged on the light emitting side of the first display substrate,
wherein the display area of the first display substrate is a first display area, the display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region.
Specifically, as shown in fig. 9, the display panel includes a first display substrate 1 and a second display substrate 2 disposed on the light-emitting side of the first display substrate 1. In this embodiment, the first display substrate 1 is a gray scale display substrate, and the second display substrate 2 is a color display substrate. The first display substrate 1 and the second display substrate 2 are both liquid crystal display substrates.
The first display substrate 1 may specifically further include a first display layer 11 and a polarizer 12 positioned at a lower portion of the first display layer 11, the first display layer 11 may include various functional layers to realize display, an array substrate and a counter substrate, wherein the array substrate may include the above-described substrate, pixel electrode, driving circuit layer and common electrode. Polarizer 12 may be, but is not limited to, a direct-attached high-efficiency reflective linear polarizer (DLRP).
In a specific manufacturing method, the first display layer 11 and the polarizer 12 may be separately prepared, and bonded together by an adhesive layer to form the first display substrate 1.
With continued reference to fig. 9, in general, the second display substrate 2 includes a second display layer 21, and polarizers 22, 23 disposed at lower and upper portions of the second display layer 21, for example, but not limited to, the polarizer 23 at the upper portion of the second display layer 21 is a polarizer having an anti-glare and atomization film layer, which may be formed by uniformly distributing fine particles on a Pressure Sensitive Adhesive (PSA) layer of the polarizer, for eliminating coherence of light. The polarizer 22 at the lower part of the second display layer 21 is a polarizer having a scratch preventing (HC) layer.
In a specific manufacturing process, the second display substrate 2 is formed by preparing the second display layer 21, the polarizers 22 and 23, respectively, and bonding the three together through an adhesive layer.
And then, the first display substrate 1 and the second display substrate 2 are aligned by using alignment equipment and are bonded together through the bonding layer 3, so that the alignment difficulty is reduced, the problem of image display loss caused by equipment errors is avoided, and the yield is improved by using the arrangement of the second pixel area in the first display substrate.
The application aims at the existing problems at present, a display panel, a manufacturing method thereof and a display device are formulated, and by providing a first display substrate and a second display substrate arranged on the light emitting side of the first display substrate, the resolution of the first display region is smaller than that of the second display region, the number of pixels of the first display region is proportional to that of the second display region, the display region of the first display substrate comprises a first pixel region and a second pixel region surrounding the first pixel region, the pixel size of the second pixel region is larger than that of the first pixel region, and each edge of the first display region extends beyond the edge of the second display region, so that the alignment deviation of the first display region and the second display region is avoided under the condition that the number of pixels in the first display substrate and the second display substrate is not changed, the problem that the edge display is lost and the frame wiring design of a narrow product is facilitated, and the display device has wide application prospect.
It should be understood that the foregoing examples of the present application are provided merely for clearly illustrating the present application and are not intended to limit the embodiments of the present application, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present application as defined by the appended claims.
Claims (9)
1. A display panel comprises a first display substrate and a second display substrate arranged on the light emitting side of the first display substrate, wherein the display area of the first display substrate is a first display area, the display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region,
the second display area is in the range of the first display area, and the area of the second display area is smaller than that of the first display area,
and in the direction from the edge of the second display area to the edge of the first display area, the distance between the edge of the first display area and the edge of the second display area is more than or equal to 0.3mm.
2. The display panel according to claim 1, wherein the number of pixels of the second pixel region is 2 or less in a direction from the edge of the first pixel region to the edge of the second pixel region.
3. The display panel according to claim 1, wherein a ratio of a size of pixels in the second pixel region to a size of pixels in the first pixel region is greater than 1 and equal to or less than 1.5.
4. The display panel of claim 1, wherein the first display substrate further comprises at least one driver chip disposed in a non-display area, the driver chip comprising a plurality of sets of driver pins for driving columns of pixels in the first display area, each set of driver pins comprising R pins, G pins, and B pins controlled independently of each other,
the display panel further includes a driving signal line electrically connected to each column of pixels,
in each group of driving pins, at least one pin of the R pins, the G pins and the B pins is electrically connected with a corresponding driving signal line, and the number of the two adjacent groups of vacant pins is equal.
5. The display panel of claim 4, wherein the display panel comprises,
in each group of the driving pins, one of the R pin, the G pin, and the B pin is electrically connected with a corresponding one of the driving signal lines.
6. The display panel of claim 1, wherein the first display substrate further comprises at least one driver chip disposed in a non-display area, the driver chip comprising a plurality of sets of driver pins for driving columns of pixels in the first display area, each set of driver pins comprising R pins, G pins, and B pins controlled independently of each other,
the display panel further comprises a driving signal line electrically connected with each column of pixels, and each of the plurality of groups of driving pins is electrically connected to the driving signal line in a one-to-one correspondence.
7. The display panel of any one of claims 1-6, wherein the first display substrate is a grayscale display substrate and the second display substrate is a color display substrate.
8. A display device comprising the display panel of any one of claims 1-7.
9. A method of making a display panel as claimed in any one of claims 1 to 7, comprising:
forming a first display substrate;
forming a second display substrate;
bonding the first display substrate and the second display substrate in alignment, wherein the second display substrate is arranged on the light emitting side of the first display substrate,
wherein the display area of the first display substrate is a first display area, the display area of the second display substrate is a second display area,
the resolution of the first display area is smaller than the resolution of the second display area, and the number of pixels of the first display area is proportional to the number of pixels of the second display area,
the first display region includes a first pixel region located in the middle and a second pixel region surrounding the first pixel region, a pixel size in the second pixel region being larger than a pixel size in the first pixel region.
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| JP2004329692A (en) * | 2003-05-09 | 2004-11-25 | Hitachi Displays Ltd | Display device and game machine |
| US20090146933A1 (en) * | 2004-11-24 | 2009-06-11 | Koninklijke Philips Electronics, N.V. | High contrast liquid crystal display device |
| CN107516469B (en) * | 2017-09-29 | 2020-05-26 | 联想(北京)有限公司 | Display electronic equipment and driving method thereof |
| CN109448575B (en) * | 2018-12-29 | 2020-12-29 | 上海天马微电子有限公司 | Transparent display panel and transparent display device |
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