Array substrate and preparation method thereof, display panel and customized substrate

Abstract

The invention provides an array substrate, a preparation method of the array substrate, a display panel and a customized substrate. The problem that in the prior art, a display panel cannot achieve high transmittance under relatively high PPI is solved. The array substrate comprises a transparent substrate; the pixel circuits are arranged in an array and arranged on the surface of the transparent substrate, and a light-transmitting area is defined by the pixel circuits; the light leading-in piece is arranged on the side, opposite to the pixel circuit, of the transparent substrate, and the orthographic projection of the pixel circuit on the transparent substrate at least partially coincides with the orthographic projection of the light leading-in piece on the transparent substrate; the light guide-out piece is arranged in at least part of the light-transmitting area; light enters the transparent substrate from the light guide-in piece, is reflected in the transparent substrate and then is guided out from the light guide-out piece. According to the array substrate, the light is reflected in the transparent substrate according to the optical waveguide principle, the reflected light is guided out from the light guide-out piece, incident light corresponding to the pixel circuit is transmitted out from the light transmitting area, the light transmittance of the array substrate is improved, and the perspective effect is enhanced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an array substrate and a preparation method thereof, a display panel and a customized substrate. Background Art

[0002] With the development of display technology, the requirements for display panels are getting higher and higher. For example, transparent display panels require that the display panel not only has the display function, but also needs to be able to see the things behind it. The better the display effect of the transparent display panel, the higher the corresponding pixel PPI (Pixels Per Inch, also known as pixel density); the better the perspective effect, that is, the higher the transmittance, the lower the corresponding pixel PPI. How to achieve high transmittance at a relatively high PPI becomes a problem. Summary of the invention

[0003] In view of this, an embodiment of the present application provides an array substrate, which solves the problem in the prior art that the display panel cannot achieve high transmittance at a relatively high PPI.

[0004] In a first aspect, the present application provides an array substrate, the array substrate comprising:

[0005] Transparent substrate;

[0006] A plurality of pixel circuits arranged in an array are disposed on the surface of a transparent substrate, and the pixel circuits enclose a light-transmitting area;

[0007] The light-introducing member is disposed on a side of the transparent substrate opposite to the pixel circuit, and the orthographic projection of the pixel circuit on the transparent substrate at least partially overlaps with the orthographic projection of the light-introducing member on the transparent substrate;

[0008] A light guide outgoing member is disposed in at least a portion of the light-transmitting area;

[0009] The light enters the transparent substrate from the light introduction member, is reflected in the transparent substrate, and then is output from the light output member.

[0010] In one embodiment, the light-introducing member includes an incoupling grating, and the light-outputting member includes an outcoupling grating;

[0011] Preferably, the coupling-in grating and the coupling-out grating each independently comprise a one-dimensional grating and / or a two-dimensional grating;

[0012] Preferably, the one-dimensional grating comprises at least one of a tilted grating, a trapezoidal grating, a blazed grating and a rectangular grating;

[0013] Preferably, the two-dimensional grating comprises a cylindrical grating;

[0014] Preferably, light enters the transparent substrate from the light introducing member, and is output from the light outputting member after being totally reflected in the transparent substrate.

[0015] In one embodiment, the orthographic projection of the pixel circuit on the transparent substrate covers the orthographic projection of the light guide member on the transparent substrate;

[0016] Preferably, the orthographic projection of the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the light guide member on the transparent substrate;

[0017] Preferably, the orthographic projection of the light guide element on the transparent substrate completely overlaps with the orthographic projection of the light-transmitting area on the transparent substrate; preferably, the pixel circuit includes a first signal line and a second signal line, the first signal line extends along a first direction, the second signal line extends along a second direction, the first signal line and the second signal line enclose a light-transmitting area, and the first direction intersects with the second direction.

[0018] In one embodiment, the transparent substrate comprises a transparent substrate and a total reflection layer.

[0019] The total reflection layer is arranged inside the transparent substrate, or,

[0020] The total reflection layer is arranged between the transparent substrate and the light guide member, or,

[0021] The total reflection layer is arranged between the transparent substrate and the pixel circuit.

[0022] The orthographic projection of the pixel circuit on the transparent substrate covers the orthographic projection of the total reflection layer on the transparent substrate, and the refractive index of the total reflection layer is greater than the refractive index of the transparent substrate;

[0023] Preferably, the orthographic projection of the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the total reflection layer on the transparent substrate;

[0024] Preferably, the refractive index of the transparent substrate is greater than or equal to 1.86 and less than or equal to 1.92;

[0025] Preferably, the material of the total reflection layer includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate includes glass.

[0026] A second aspect of the present application provides a method for preparing an array substrate, comprising:

[0027] A plurality of pixel circuits arranged in an array are prepared on the surface of a transparent substrate, wherein the pixel circuits surround a light-transmitting area;

[0028] A light-introducing member is disposed on a side of the transparent substrate opposite to the pixel circuit, and an orthographic projection of the pixel circuit on the transparent substrate at least partially overlaps with an orthographic projection of the light-introducing member on the transparent substrate;

[0029] A light output member is arranged in at least part of the light-transmitting area, wherein light can enter the transparent substrate from the light output member, and be output from the light output member after being reflected in the transparent substrate.

[0030] In one embodiment, before the step of preparing pixel circuits arranged in an array on the surface of the transparent substrate, the method further includes:

[0031] A total reflection layer is prepared inside the transparent substrate to obtain a transparent substrate; or,

[0032] A total reflection layer is prepared on the surface of the transparent substrate opposite to the pixel circuit to obtain a transparent substrate; or,

[0033] A total reflection layer is prepared between the transparent substrate and the pixel circuit to obtain a transparent substrate.

[0034] A third aspect of the present application provides a display panel, comprising the above-mentioned array substrate, or comprising the array substrate prepared by the above-mentioned preparation method.

[0035] In one embodiment, it further includes:

[0036] A light emitting device, the light emitting device being arranged on a side of the pixel circuit away from the transparent substrate;

[0037] The orthographic projection of the light emitting device and the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the light introducing member on the transparent substrate.

[0038] A fourth aspect of the present application provides a customized substrate, comprising:

[0039] Transparent substrate;

[0040] A total reflection layer, the total reflection layer is arranged inside the transparent substrate, or,

[0041] The total reflection layer is disposed on at least a portion of the surface of the transparent substrate;

[0042] The refractive index of the total reflection layer is greater than the refractive index of the transparent substrate.

[0043] In one embodiment, the refractive index of the transparent substrate is greater than or equal to 1.86 and less than or equal to 1.92;

[0044] Preferably, the material of the total reflection layer includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate includes glass.

[0045] The light importing member and the light exporting member in the present application are arranged on both sides of the transparent substrate, wherein the light exporting member is arranged in the light-transmitting area, and the light importing member is arranged on the side opposite to the pixel circuit, and the orthographic projection image of the light importing member on the transparent substrate at least partially overlaps with the orthographic projection of the pixel circuit on the transparent substrate, so that the light incident corresponding to the pixel circuit can enter the transparent substrate from the light importing member, and the light is reflected in the transparent substrate by utilizing the optical waveguide principle, and the reflected light is propagated to the light exporting member and exported from the light exporting member, so that the light incident corresponding to the pixel circuit is transmitted out from the light-transmitting area, thereby improving the light transmittance of the array substrate and enhancing the perspective effect; at the same time, the array substrate of the present application does not need to perform additional processing on the pixel circuit, such as there is no need to reduce the width and area of ​​the pixel circuit, does not affect the wiring square resistance and the power consumption of the array substrate, is conducive to improving the brightness uniformity of the display panel, and helps to improve the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The figure is a schematic diagram of the structure of an array substrate according to an embodiment of the present application.

[0047] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the array substrate along the AA' direction.

[0048] Figure 3 Schematic diagram of the cross-sectional structure of an array substrate in another embodiment of the present application.

[0049] Figure 4 Schematic diagram of the cross-sectional structure of an array substrate in another embodiment of the present application.

[0050] Figure 5 Schematic diagram of the cross-sectional structure of an array substrate in another embodiment of the present application.

[0051] Figure 6 The present invention is a flow chart of a method for preparing an array substrate according to an embodiment of the present application.

[0052] Figure 7 This is a schematic diagram of the structure of a display panel according to an embodiment of the present application.

[0053] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of the display panel along the BB' direction.

[0054] Fig. 9 A schematic diagram of the structure of a customized substrate according to an embodiment of the present application.

[0055] Fig.10 This is a schematic structural diagram of a customized substrate according to another embodiment of the present application. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods and means well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0059] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0060] Transparent display panels have very high requirements for transmittance. In addition to displaying the picture, it is also necessary to see clearly what is behind the screen. In order to improve the transmittance of the display panel, it is generally adopted to reduce PPI, compress pixel area and compress pixel circuit routing. However, increasing the transmittance of the display panel by reducing PPI will cause serious pixel granularity, resulting in poor display effect, which is not conducive to the visual effect of the human eye; increasing the transmittance of the display panel by compressing the pixel area will cause the pixel aperture ratio to decrease, the luminous area to decrease, and the life of the display panel to deteriorate; increasing the transmittance of the display panel by compressing the pixel circuit routing will increase the routing square resistance on the one hand, resulting in increased power consumption and decreased brightness uniformity, and on the other hand, it will increase the difficulty of production, challenge the etching process limit, and significantly reduce the product yield. In order to further promote the development of transparent display panels, it is urgent to find new methods to improve the transmittance of the display panel without affecting the display effect.

[0061] Based on this, the first aspect of the present application provides an array substrate, the structural schematic diagram of the array substrate is shown in FIG. Figure 1 and Figure 2The array substrate includes: a transparent substrate 100; a plurality of pixel circuits 200 arranged in an array, which are arranged on the surface of the transparent substrate 100, and the pixel circuits 200 surround a light-transmitting area 210; a light-introducing member 300, which is arranged on a side of the transparent substrate 100 opposite to the pixel circuits 200, and the orthographic projection of the pixel circuits 200 on the transparent substrate 100 at least partially overlaps with the orthographic projection of the light-introducing member 300 on the transparent substrate 100; a light-outputting member 400, which is arranged in at least part of the light-transmitting area 210; wherein light enters the transparent substrate 100 from the light-introducing member 300, is reflected in the transparent substrate 100, and is then output from the light-outputting member 400.

[0062] Exemplarily, light enters the transparent substrate 100 from the light introducing member 300 , is totally reflected in the transparent substrate 100 , and then is guided out from the light guiding member 400 .

[0063] It should be noted that in the present application, for example, the side of the transparent substrate 100 pointing to the pixel circuit 200 is defined as the light-emitting side a, and the side of the transparent substrate 100 away from the pixel circuit 200 is defined as the light-entering side b. The transmittance refers to the proportion of the part of the light incident from the light-entering side b and emitted from the light-emitting side a to the light incident on the light-entering side b. The higher the transmittance, the greater the viewing angle of the light-entering side seen by the human eye, and the closer it is to the real scene, thereby more able to meet the needs of people to watch the display screen and the environmental screen at the same time. It can be understood that the light on the light-entering side b includes the incident light corresponding to the light-transmitting area 210, and also includes the incident light corresponding to the pixel circuit 200. Figure 2In the figure, for ease of understanding, the solid line represents the incident light corresponding to the light-transmitting area 210, and the dotted line represents the incident light corresponding to the pixel circuit 200; in the present application, the incident light corresponding to the pixel circuit 200 is transmitted to the light-transmitting area 210 through the optical waveguide principle for output; and the incident light corresponding to the light-transmitting area 210 is directly transmitted from the light-entering side b to the light-emitting side a, and is not affected by the light-emitting component 400. The light guide member 300 and the light output member 400 in the present application are arranged on both sides of the transparent substrate 100, wherein the light output member 400 is arranged in the light-transmitting area, and the light guide member 300 is arranged on the side opposite to the pixel circuit 200, and the orthographic projection of the light guide member 300 on the transparent substrate 100 at least partially overlaps with the orthographic projection of the pixel circuit on the transparent substrate 100, so that the light incident corresponding to the pixel circuit 200 can enter the transparent substrate from the light guide member 300, and the light is reflected in the transparent substrate 100 by using the optical waveguide principle, and the reflected light is transmitted to the light output member 400 and output from the light output member 400, so that the light incident corresponding to the pixel circuit 200 is transmitted from the light-transmitting area, thereby improving the light transmittance of the array substrate and enhancing the perspective effect; at the same time, in the array substrate of the present application, there is no need to perform additional processing on the pixel circuit 200, for example, there is no need to reduce the width and area of ​​the pixel circuit 200, and the wiring square resistance and the power consumption of the array substrate are not affected, which is conducive to improving the brightness uniformity of the display panel and helping to improve the yield.

[0064] It is understandable that without the light introducing member 300 and the light exporting member 400 , the light incident from the light incident side b corresponding to the pixel circuit 200 can hardly be emitted, resulting in relatively low transparency of the array substrate.

[0065] It should be noted that the light enters the transparent substrate 100 from the light introducing member 300, is totally reflected in the transparent substrate 100, and is then output from the light outputting member 400, which utilizes the principle of optical waveguide; the transparent substrate 100 is required to have a higher refractive index so that the light entering the transparent substrate 100 can be totally reflected.

[0066] In one embodiment, the material of the transparent substrate 100 includes glass or transparent resin, etc. In a specific embodiment, the main material of the transparent substrate 100 is glass, which can be conventional glass and does not have a high refractive index. In this case, the transparent substrate 100 needs to be improved accordingly to achieve total reflection of light in the transparent substrate 100. Exemplarily, a high refractive index material having a refractive index greater than that of glass can be added to the transparent substrate 100.

[0067] In a specific embodiment, the cross-sectional structure diagram of the array substrate is shown in FIG. Figures 3 to 5 The transparent substrate 100 further includes a transparent substrate 110 and a total reflection layer 500, and the total reflection layer 500 is arranged inside the transparent substrate 110 (refer to Figure 3), or, the total reflection layer 500 is disposed between the transparent substrate 110 and the light guide member 300 (refer to Figure 4 ), or, the total reflection layer 500 is disposed between the transparent substrate 110 and the pixel circuit 200 (refer to Figure 5 ), the orthographic projection of the pixel circuit 200 on the transparent substrate 110 covers the orthographic projection of the total reflection layer 500 on the transparent substrate 110, and the refractive index of the total reflection layer 500 is greater than the refractive index of the transparent substrate 110. As a result, the light is totally reflected after entering the total reflection layer 500, and the light enters the transparent substrate 110 after passing from one end 510 to the other end 520 of the total reflection layer 500, and then enters the light output member 400 from the transparent substrate 110, thereby achieving the effect of transmitting the incident light corresponding to the pixel circuit to the light-transmitting area to increase the light transmittance. In a preferred embodiment, the refractive index of the transparent substrate 110 is greater than or equal to 1.86 and less than or equal to 1.92, for example, it can be 1.86, 1.88, 1.90 or 1.92. As a result, it is conducive to achieving total reflection of the light entering the total reflection layer 500 from the light input member 300.

[0068] The thickness of the transparent substrate 110 is not particularly limited, as long as it can satisfy the requirement that light can pass through and realize transparent display. The thickness of the total reflection layer 500 is also not particularly limited, as long as it can satisfy the requirement that light can be fully reflected in the total emission layer. Exemplarily, when the total reflection layer 500 is arranged inside the transparent substrate 110, the thickness of the total reflection layer 500 can be less than the thickness of the transparent substrate 110, and the total reflection layer 500 is located at any position of the transparent substrate 110 in the thickness direction; when the total reflection layer 500 is arranged inside the transparent substrate 110, the thickness of the total reflection layer 500 can be equal to the thickness of the transparent substrate 110; when the total reflection layer 500 is arranged on the surface of the transparent substrate 110 away from the pixel circuit 200, the thickness of the total reflection layer 500 can be flexibly selected according to actual conditions.

[0069] The material of the total reflection layer 500 is not particularly limited, as long as the refractive index of the total reflection layer 500 is greater than the refractive index of the transparent substrate 110, and light can be totally reflected in the total reflection layer 500. Exemplarily, the material of the total reflection layer 500 includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate 110 includes glass.

[0070] Exemplarily, the orthographic projection of the pixel circuit 200 on the transparent substrate 100 covers the orthographic projection of the light guide member 300 on the transparent substrate 100; in a preferred embodiment, the orthographic projection of the pixel circuit 200 on the transparent substrate 110 completely overlaps with the orthographic projection of the total reflection layer 500 on the transparent substrate 110. Thus, the incident light corresponding to the pixel circuit can be transmitted to the light-transmitting area to the greatest extent, and the effect of increasing the light transmittance is excellent.

[0071] Exemplarily, the pixel circuit 200 includes a first signal line 201 extending along a first direction a and a second signal line 202 extending along a second direction b, the first direction a intersects the second direction b, the first signal line 201 and the second signal line 202 enclose a transparent area 210, and exemplarily, one of the first signal line 201 and the second signal line 202 is a scan line, and the other of the first signal line 201 and the second signal line 202 is a data line. In one embodiment, the pixel circuit 200 completely overlaps with the orthographic projection of the total reflection layer 500 on the transparent substrate 110.

[0072] In one embodiment, the light-introducing member 300 includes an in-coupling grating 310, and the light-outputting member 400 includes an out-coupling grating 410. The in-coupling grating 310 and the out-coupling grating 410 are made of low-refractive-index organic glue or inorganic material by nanoimprinting process, and the size is nanometer level, which is the same order of magnitude as the wavelength of visible light; the in-coupling grating 310 can be a one-dimensional grating such as a tilted grating, a trapezoidal grating, a blazed grating, and a rectangular grating structure; it can also be a two-dimensional grating such as a cylindrical grating structure, but it is not limited to the above structures; the out-coupling grating 410 can be a one-dimensional grating such as a tilted grating, a trapezoidal grating, a blazed grating, and a rectangular grating structure; it can also be a two-dimensional grating such as a cylindrical grating structure, but it is not limited to the above structures.

[0073] Exemplarily, light incident on the coupling-in grating 310 perpendicularly to the transparent substrate 110 may enter the transparent substrate 110, and light incident at a certain angle (the angle is greater than 0° and less than 180°) to the transparent substrate 110 may also enter the transparent substrate 110. Exemplarily, light emitted perpendicularly to the transparent substrate 110 may be emitted through the coupling-out grating 410, and light incident at a certain angle (the angle is greater than 0° and less than 180°) to the transparent substrate 110 may also be emitted through the coupling-out grating 410.

[0074] It should be noted that the coupling-in grating 310 and the coupling-out grating 410 can selectively modulate part of the light that meets the corresponding conditions according to the relevant characteristics of the incident light (such as the polarization state). Exemplarily, both the coupling-in grating 310 and the coupling-out grating 410 have polarization selectivity and only diffract specific light. In this way, it can be ensured that light other than the specific light is not disturbed, and is smoothly propagated by total reflection in the transparent substrate 110 and emitted from the coupling-out grating 410. In one embodiment, the periods of the coupling-in grating 310 and the coupling-out grating 410 are the same. In this way, it can be ensured that the exit angle of the light modulated by the coupling-out grating 410 is restored to the incident angle when it is incident on the coupling-in grating 310, which is beneficial to increase the transmittance of the display panel, and the picture seen through the display panel is more in line with the real scene.

[0075] It should be noted that the orthographic projection of the pixel circuit 200 on the transparent substrate 110 covers the orthographic projection of the light guide member 300 on the transparent substrate 110, which means that the orthographic projection of the light guide member 300 on the transparent substrate 110 is located within the range of the orthographic projection of the pixel circuit 200 on the transparent substrate 110, and the area of ​​the orthographic projection of the light guide member 300 on the transparent substrate 110 is less than or equal to the area of ​​the orthographic projection of the pixel circuit 200 on the transparent substrate 110. In order to maximize the transmission of the incident light corresponding to the pixel circuit to the light-transmitting area, in one embodiment, the orthographic projection of the pixel circuit 200 on the transparent substrate 110 completely overlaps with the orthographic projection of the light guide member 300 on the transparent substrate 110; the orthographic projection of the light guide member 400 on the transparent substrate 110 completely overlaps with the orthographic projection of the light-transmitting area on the transparent substrate 110. As a result, almost all of the incident light corresponding to the pixel circuit can be introduced into the transparent substrate 110 through the light guide member 300 and then exported from the light guide member 400.

[0076] It can be understood that the pixel circuit 200 surrounds a plurality of light-transmitting areas 210 arranged in an array, and the light-guiding member 400 can be provided in one light-transmitting area 210, or in a plurality of light-transmitting areas 210, or in all light-transmitting areas 210. The more light-guiding members 400 are provided, the higher the transmittance of the array substrate.

[0077] It should be noted that the provision of the light output component 400 in the present application does not affect the normal emission of the incident light corresponding to the light-transmitting area 210 .

[0078] The above-mentioned array substrate of the present application guides the incident light corresponding to the pixel circuit into the light-transmitting area 210 without compressing the line width of the pixel circuit 200, which is beneficial to improving the transmittance of the display panel without affecting the square resistance of the line and the power consumption of the display panel, which is beneficial to improving the brightness uniformity and helps to improve the yield.

[0079] It is understandable that the pixel circuit 200 includes metal wiring, which will also reflect part of the incident light corresponding to the pixel circuit into the transparent substrate 110, thereby further improving the transmittance of the array substrate. The material of the metal wiring includes but is not limited to aluminum, titanium and other metal materials.

[0080] The second aspect of the present application provides a method for preparing the above-mentioned array substrate. The flowchart of the method for preparing the array substrate is shown in FIG. Figure 6 , the preparation method comprises:

[0081] S100: preparing a plurality of pixel circuits arranged in an array on a surface of a transparent substrate, wherein the pixel circuits enclose a light-transmitting area.

[0082] It should be noted that the transparent substrate, the pixel circuit and the light-transmitting area are consistent with the previous description and will not be described in detail here.

[0083] It can be understood that the method for preparing a pixel circuit on the surface of a transparent substrate may be a method for preparing a pixel circuit in a conventional transparent display panel. This preparation method is not an improvement of the present application and will not be described in detail herein.

[0084] S200: a light-introducing member is disposed on a side of the transparent substrate opposite to the pixel circuit, and an orthographic projection of the pixel circuit on the transparent substrate at least partially overlaps with an orthographic projection of the light-introducing member on the transparent substrate.

[0085] It should be noted that the light guide component is consistent with the above description and will not be described in detail here.

[0086] Arranging the light guide member on the side of the transparent substrate opposite to the pixel circuit includes: using a nano-imprinting process to make a low-refractive index organic glue or inorganic material on the surface of the transparent substrate opposite to the pixel circuit to form the light guide member.

[0087] S300: Arrange a light output component in at least a portion of the light-transmitting area.

[0088] The light can enter the transparent substrate from the light introduction member, and then be guided out from the light guidance member after being reflected in the transparent substrate.

[0089] In one embodiment, before the step of preparing pixel circuits arranged in an array on the surface of a transparent substrate, it also includes: preparing a total reflection layer inside the transparent substrate to obtain a transparent substrate; or, preparing a total reflection layer on the surface of the transparent substrate opposite to the pixel circuit to obtain a transparent substrate; or, preparing a total reflection layer between the transparent substrate and the pixel circuit to obtain a transparent substrate.

[0090] It should be noted that the transparent substrate and the total reflection layer are consistent with the above description and will not be described in detail here.

[0091] In a specific embodiment, a method for preparing an array substrate includes:

[0092] A pixel circuit is prepared on the surface of a transparent substrate, wherein the pixel circuit is surrounded to form a plurality of light-transmitting areas;

[0093] Prepare a total reflection layer on the surface of the transparent substrate opposite to the pixel circuit;

[0094] A light-introducing member is prepared on a surface of the total reflection layer away from the pixel circuit, and the orthographic projection of the pixel circuit on the transparent substrate covers the orthographic projection of the light-introducing member on the transparent substrate;

[0095] A light output member is prepared in the light-transmitting region, and the light output member is located on the surface of the transparent substrate.

[0096] It should be noted that the array substrate prepared by the preparation method of this embodiment can be combined with the array substrate described above in whole or in part, which will not be described in detail here.

[0097] The third aspect of the present application provides a display panel, which includes the above array substrate, or includes the array substrate prepared by the above preparation method. Therefore, the display panel has a high transmittance, does not need to reduce the compressed pixel area, and does not need to reduce the PPI, has an excellent display effect, good brightness uniformity, high product yield and low power consumption.

[0098] In one embodiment, the structural diagram of the display panel is shown in FIG. Figure 7 and Figure 8 The display panel further includes: a light emitting device 600, which is arranged on a surface of the pixel circuit 200 away from the transparent substrate 110; the orthographic projection of the light emitting device 600 and the pixel circuit 200 on the transparent substrate 110 completely overlaps with the orthographic projection of the light introducing member 300 on the transparent substrate 110. Thus, the incident light corresponding to the light emitting device can be guided out through the light-transmitting area, further achieving high transmittance of the display panel.

[0099] It should be noted that the pixel circuit, the light output component, and the light input component are consistent with the previous description and will not be described in detail here.

[0100] It should be noted that the orthographic projection of the light-emitting device 600 and the pixel circuit 200 on the transparent substrate 110 means that the light-emitting device 600 is located on the surface of the pixel circuit 200 away from the transparent substrate 110, and the orthographic projection of the light-emitting device 600 on the transparent substrate 110 overlaps with the orthographic projection of the pixel circuit 200 on the transparent substrate 110 at least partially. The orthographic projection of the light-emitting device 600 and the pixel circuit 200 on the transparent substrate 110 may coincide with the orthographic projection of the light-emitting device 600 on the transparent substrate 110, or may coincide with the orthographic projection of the pixel circuit 200 on the transparent substrate 110, or may not coincide with the orthographic projection of the light-emitting device 600 on the transparent substrate 110 and the orthographic projection of the pixel circuit 200 on the transparent substrate 110 (at this time, the area of ​​the orthographic projection of the light-emitting device 600 and the pixel circuit 200 on the transparent substrate 110 is greater than the area of ​​the orthographic projection of the light-emitting device 600 on the transparent substrate 110, and is greater than the area of ​​the orthographic projection of the pixel circuit 200 on the transparent substrate 110).

[0101] It is understandable that without the light introducing member 300 and the light exporting member 400 , the light incident from the light incident side corresponding to the light emitting device 600 can hardly be emitted, resulting in relatively low transparency of the array substrate.

[0102] It should be noted that the light guide is arranged in the light-transmitting area surrounded by the pixel circuit, and the light-emitting device is arranged on the surface of the pixel circuit away from the transparent substrate. The light emitted by the light-emitting device will hardly interfere with the light guided by the light guide, and the light guided by the light guide will hardly affect the light emitted by the light-emitting device. In other words, the picture displayed by the display panel and the ambient picture transmitted from the light incident side to the light exit side have almost no influence on each other, while satisfying the excellent display effect, the ambient picture is restored as much as possible to enhance the user experience.

[0103] Exemplarily, the light-emitting devices in the display panel are distributed in an array of island structures on the surface of the pixel circuit away from the transparent substrate. The size of the light-emitting devices in the island structure can be set and prepared according to the size of the conventional transparent display panel, which is not an improvement of the present application. It can be understood that by providing a light guide member on the side of the transparent substrate away from the light-emitting device, the incident light corresponding to the light-emitting device can be transmitted to the light-transmitting area through the optical waveguide principle, thereby increasing the transmittance of the display panel without reducing the size of the light-emitting device, avoiding the problem of a decrease in pixel aperture ratio and a reduction in the light-emitting area, which leads to a deterioration in the life of the display panel.

[0104] The display panel of the present application can, without reducing the pixel PPI or reducing the pixel area, guide the incident light corresponding to the light-emitting device into the light-transmitting area to the maximum extent, thereby improving the transmittance of the display panel and enhancing the perspective effect without affecting the pixel display effect and the life of the screen; the above-mentioned display panel has a wide range of uses, such as traffic windows, museum display cabinets, shopping mall windows, and AR, and can enhance the display effect, make the scene cooler, and enrich the display effect.

[0105] The display panel of the present application can be applied to all transparent display devices, including but not limited to transparent LCD display screens, transparent OLED display screens, transparent Micro-LED display screens, etc. The display panel can be used to display static images, such as pictures or photos, etc. The display device can also be used to display dynamic images, such as videos, etc.

[0106] The fourth aspect of the present application provides a customized substrate, the structural schematic diagram of the customized substrate is shown in FIG. Fig. 9 and Fig.10 The customized substrate includes: a transparent substrate 110; a total reflection layer 500, wherein the total reflection layer 500 is disposed inside the transparent substrate 110, or the total reflection layer 500 is disposed on at least a portion of the surface of the transparent substrate 110; wherein the refractive index of the total reflection layer 500 is greater than the refractive index of the transparent substrate 110. Thus, it is beneficial to realize the transmission of light in the total reflection layer, which helps to broaden the source of high refractive index substrate materials.

[0107] In one embodiment, the refractive index of the transparent substrate is greater than or equal to 1.86 and less than or equal to 1.92; the material of the total reflection layer includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate includes glass. Therefore, the refractive index of the total reflection layer is greater than the refractive index of the transparent substrate, which is conducive to the transmission of light in the customized substrate.

[0108] The shape of the total reflection layer is not particularly limited. For example, the cross-sectional shape of the total reflection layer can be polygonal, circular or other regular or irregular shapes, which can be flexibly selected according to actual conditions. The thickness of the total reflection layer is not particularly limited either, which can be flexibly selected according to actual conditions.

[0109] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0110] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An array substrate, characterized in that: include: Transparent substrate; A plurality of pixel circuits arranged in an array are disposed on the surface of the transparent substrate, and the pixel circuits enclose a light-transmitting area; A light-introducing member is disposed on a side of the transparent substrate opposite to the pixel circuit, and an orthographic projection of the pixel circuit on the transparent substrate at least partially overlaps with an orthographic projection of the light-introducing member on the transparent substrate; A light guide outgoing member, arranged in at least a portion of the light-transmitting area; The light enters the transparent substrate from the light introducing member, is reflected in the transparent substrate, and is then guided out from the light guiding member.

2. The array substrate according to claim 1, characterized in that: The light-introducing component includes an in-coupling grating, and the light-outputting component includes an out-coupling grating; Preferably, the coupling-in grating and the coupling-out grating each independently comprise a one-dimensional grating and / or a two-dimensional grating; Preferably, the one-dimensional grating includes at least one of a tilted grating, a trapezoidal grating, a blazed grating and a rectangular grating; Preferably, the two-dimensional grating comprises a cylindrical grating; Preferably, light enters the transparent substrate from the light introducing member, is totally reflected in the transparent substrate, and then is guided out from the light guiding member.

3. The array substrate according to claim 1, characterized in that: The orthographic projection of the pixel circuit on the transparent substrate covers the orthographic projection of the light introducing member on the transparent substrate; Preferably, the orthographic projection of the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the light-introducing component on the transparent substrate; Preferably, the orthographic projection of the light guide element on the transparent substrate completely overlaps with the orthographic projection of the light-transmitting area on the transparent substrate; preferably, the pixel circuit includes a first signal line and a second signal line, the first signal line extends along a first direction, the second signal line extends along a second direction, the first signal line and the second signal line enclose the light-transmitting area, and the first direction intersects with the second direction.

4. The array substrate according to claim 1, characterized in that: The transparent substrate comprises a transparent substrate and a total reflection layer. The total reflection layer is arranged inside the transparent substrate, or, The total reflection layer is disposed between the transparent substrate and the light guide member, or, The total reflection layer is arranged between the transparent substrate and the pixel circuit. The orthographic projection of the pixel circuit on the transparent substrate covers the orthographic projection of the total reflection layer on the transparent substrate, and the refractive index of the total reflection layer is greater than the refractive index of the transparent substrate; Preferably, the orthographic projection of the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the total reflection layer on the transparent substrate; Preferably, the refractive index of the transparent substrate is greater than or equal to 1.86 and less than or equal to 1.92; Preferably, the material of the total reflection layer includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate includes glass.

5. A method for preparing an array substrate, characterized in that: include: A plurality of pixel circuits arranged in an array are prepared on a surface of a transparent substrate, wherein the pixel circuits enclose a light-transmitting area; A light-introducing member is disposed on a side of the transparent substrate opposite to the pixel circuit, and an orthographic projection of the pixel circuit on the transparent substrate at least partially overlaps with an orthographic projection of the light-introducing member on the transparent substrate; A light output member is disposed in at least a portion of the light-transmitting region, wherein light can enter the transparent substrate from the light output member and be output from the light output member after being reflected in the transparent substrate.

6. The preparation method according to claim 5, characterized in that: Before the step of preparing the pixel circuits arranged in an array on the surface of the transparent substrate, the method further includes: A total reflection layer is prepared inside a transparent substrate to obtain the transparent substrate; or, The total reflection layer is formed on the surface of the transparent substrate opposite to the pixel circuit to obtain the transparent substrate; or, The total reflection layer is prepared between the transparent substrate and the pixel circuit to obtain the transparent substrate.

7. A display panel, characterized in that: The invention comprises the array substrate according to any one of claims 1 to 4, or comprises the array substrate prepared by the preparation method according to claim 5 or 6.

8. The display panel according to claim 7, characterized in that: Also includes: A light emitting device, wherein the light emitting device is arranged on a side of the pixel circuit away from the transparent substrate; The orthographic projection of the light-emitting device and the pixel circuit on the transparent substrate completely overlaps with the orthographic projection of the light-introducing component on the transparent substrate.

9. A customized substrate, characterized in that: include: Transparent substrate; A total reflection layer, wherein the total reflection layer is arranged inside the transparent substrate, or The total reflection layer is disposed on at least a portion of the surface of the transparent substrate; Wherein, the refractive index of the total reflection layer is greater than the refractive index of the transparent substrate.

10. The customized substrate according to claim 9, characterized in that: The refractive index of the transparent substrate is greater than or equal to 1.86 and less than or equal to 1.92; Preferably, the material of the total reflection layer includes at least one of ITO, SiN and SiO2, and the material of the transparent substrate includes glass.

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