CN111652116A - Display panel assemblies and electronic equipment - Google Patents

Abstract

The invention discloses a display panel assembly and an electronic device. The display panel assembly includes: a display panel, including opposite display surfaces and non-display surfaces, the display panel includes a photosensitive device integration area; the photosensitive device is located where the non-display surface of the display panel is located side, the photosensitive surface of the photosensitive device is arranged toward the display panel, and the orthographic projection of the photosensitive device on the non-display surface of the display panel is located in the photosensitive device integration area; and the filter film is located between the photosensitive surface of the photosensitive device and the display panel, and the filter film is configured such that the transmittance of the first light is greater than the transmittance of the second light, wherein the wavelength of the first light is within the wavelength range of the identifiable light of the photosensitive device, and the wavelength of the second light is within the identifiable light of the photosensitive device outside the wavelength range. The display panel assembly according to the embodiment of the present invention can reduce the amount of light irradiated to the display panel from the side of the photosensitive device, thereby reducing the influence of this part of the light on the display effect and improving the display effect.

Description

Display panel assemblies and electronic equipment

technical field

The present invention relates to the field of display, in particular to a display panel assembly and an electronic device.

Background technique

The display panel integrated fingerprint recognition technology is a panel integration technology that provides fingerprint recognition capability without reducing the effective display area of the display panel. Existing display panels usually integrate an optical fingerprint recognition unit. The light emitted from the display panel is reflected on the surface of the finger, and the light reflected by the surface of the finger passes through the display panel and is received by the optical fingerprint identification device on the non-display surface side of the display panel. The optical fingerprint identification device can generate different identification information according to the difference in the reflection of light by the valleys and ridges of the fingerprint path, so as to identify different fingerprint path information.

Since there is an optical fingerprint identification device on the non-display surface side of the display panel, the optical fingerprint identification device will reflect a part of the light to the display panel, and the transistors in the display panel used to drive the display are illuminated by this part of the reflected light. The change causes the light-emitting elements associated with the irradiated transistors to produce different display effects from light-emitting elements in other regions, resulting in uneven brightness display (mura) of the display panel.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a display panel assembly and an electronic device, which can reduce uneven display brightness of the display panel during display.

In one aspect, an embodiment of the present invention provides a display panel assembly, which includes: a display panel including a display surface and a non-display surface opposite to each other, the display panel includes a photosensitive device integration area; the photosensitive device is located on the side of the display panel where the non-display surface is located , the photosensitive surface of the photosensitive device is arranged towards the display panel, and the orthographic projection of the photosensitive device on the non-display surface of the display panel is located in the photosensitive device integration area; and the filter film is located between the photosensitive surface of the photosensitive device and the display panel, and the filter film is It is configured that the transmittance of the first light is greater than the transmittance of the second light, wherein the wavelength of the first light is within the wavelength range of the identifiable light of the photosensitive device, and the wavelength of the second light is within the wavelength of the identifiable light of the photosensitive device out of range.

According to the foregoing embodiments of an aspect of the present invention, the filter film is configured to transmit the first light and absorb at least a portion of the second light.

According to any of the preceding embodiments of an aspect of the present invention, the display panel includes an array substrate including transistors, wherein the transistors are more sensitive to at least some of the second light rays than to the first light rays.

According to any of the foregoing embodiments of the aspect of the present invention, the photosensitive device is an optical fingerprint identification device, the first light includes green light, and the second light includes light with a wavelength smaller than that of the green light.

According to any of the foregoing embodiments of the aspect of the present invention, the display panel includes an array substrate and a light-emitting element layer on the array substrate, the light-emitting element layer includes a variety of light-emitting elements with different light-emitting colors, wherein when the display panel assembly is in a photosensitive state, The wavelength range of the light emitted by the plurality of light emitting elements overlaps with the wavelength range of the first light.

According to any of the foregoing embodiments of the aspect of the present invention, the filter film includes a first surface facing the display panel and a second surface facing the photosensitive device, and the display panel assembly further includes: an anti-reflection film disposed on the first surface of the filter film at least one of a surface, a second surface.

According to any one of the foregoing embodiments of the aspect of the present invention, the display panel assembly further includes: a support film; on the side of the display panel where the non-display surface is located; and a flexible buffer layer on the side of the support film away from the display panel, the flexible buffer layer includes a through The orthographic projection of the outline of the through hole on the non-display surface of the display panel is located in the photosensitive device integration area.

According to any one of the aforementioned embodiments of the aspect of the present invention, the support film is multiplexed into a filter film at least in a region corresponding to the integrated region of the photosensitive device.

According to any of the preceding embodiments of an aspect of the present invention, the support film includes a base layer and at least any one of: dye particles dispersed in the base layer; a dye layer located on a surface of the base layer facing the display panel and/or a surface of the base layer facing away from the display surface of the panel.

According to any of the preceding embodiments of the aspect of the present invention, the dye particles are yellow dye particles; and the dye layer is a yellow dye layer.

On the other hand, an embodiment of the present invention further provides an electronic device, which includes the display panel assembly of any one of the foregoing embodiments.

The display panel assembly according to the embodiment of the present invention includes a filter film located between the photosensitive surface of the photosensitive device and the display panel, the filter film is configured to transmit the first light more than the second light. rate, wherein the wavelength of the first light is within the wavelength range of the identifiable light of the photosensitive device, and the wavelength of the second light is outside the wavelength range of the identifiable light of the photosensitive device. When the display panel assembly is in a photosensitive state, the first light can fully pass through the filter film to reach the photosensitive device, ensuring that the photosensitive device can accurately identify the information in the first light. When the display panel assembly is in the display state, when the light passing through the display panel passes through the filter film, the transmittance of the second light is lower than the transmittance of the first light, thereby reducing the total amount of light reaching the photosensitive device, Correspondingly, the reflected light from the surface of the photosensitive device toward the display panel is also reduced, and the reflected light needs to enter the display panel through the filter film again, thereby reducing the amount of light entering the display panel from the photosensitive device side again. Therefore, compared with the prior art, the display panel assembly of the embodiment of the present invention greatly reduces the amount of light irradiated to the display panel from the side of the photosensitive device, reduces the influence of this part of the light on the display effect, and improves the display effect.

In some optional embodiments, the filter film is configured to transmit the first light and absorb the second light. The first light can fully pass through the filter film to reach the photosensitive device, so as to ensure that the photosensitive device can accurately identify the information in the first light. When the display panel assembly is in the display state, when the light passing through the display panel passes through the filter film, at least part of the second light is absorbed, so the reflected light from the surface of the photosensitive device towards the display panel is also reduced, and the reflected light needs to be again After entering the display panel through the filter film, the second light in the reflected light is absorbed twice, and the amount of light entering the display panel from the photosensitive device side is reduced. By reducing the amount of light irradiated to the display panel from the side of the photosensitive device, the influence of this part of the light on the characteristics of the semiconductor devices in the display panel can be reduced, thereby reducing the display difference between the integrated area of the photosensitive device and other display areas, and alleviating the brightness display of the display panel. Uneven (mura) problem.

In some optional embodiments, the display panel includes an array substrate, and the array substrate includes transistors, wherein the transistors are more sensitive to at least part of the second light than to the first light, that is, to the second light. The influence of at least part of the light on the characteristics of the transistor is greater than the influence of the first light on the characteristics of the transistor under the same brightness. The light in the display panel illuminates the photosensitive device, and then is reflected back to the display panel by the photosensitive device. It requires two passes to set the filter film, thereby greatly reducing the influence of the light reflected back from the photosensitive device to the display panel on the transistor characteristics. The large light makes the transistor characteristics of the photosensitive device integrated area consistent with the transistor characteristic areas of other display areas, reducing the display effect difference between the photosensitive device integrated area and other display areas.

In some optional embodiments, the display panel assembly further includes: an anti-reflection film, the anti-reflection film makes it easier for the first light identifiable by the photosensitive device to pass through the filter film, thereby improving the identification sensitivity of the photosensitive device.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features, and Figures are not drawn to actual scale.

1 is a schematic top view of a display panel assembly provided according to an embodiment of the present invention;

Fig. 2 is the schematic cross-sectional schematic diagram of A-A in Fig. 1;

3 is a schematic cross-sectional view of a first light passing through a filter film of a display panel assembly provided according to an embodiment of the present invention;

4 is a schematic cross-sectional view of a second light passing through a filter film of a display panel assembly provided according to an embodiment of the present invention;

5 is a schematic top view of a display panel assembly according to another embodiment of the present invention;

Fig. 6 is the schematic cross-sectional schematic diagram of the direction B-B in Fig. 5;

7 is a schematic top view of a display panel assembly provided according to still another embodiment of the present invention;

Fig. 8 is the schematic cross-sectional schematic diagram of the C-C direction in Fig. 7;

9 is a schematic cross-sectional view of a support film multiplexed into a filter film provided according to an embodiment of the present invention;

10 is a schematic cross-sectional view of a support film multiplexed into a filter film provided according to another embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, and are not configured to limit the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details.

It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element.

It will be understood that, in describing the structure of a component, when a layer or region is referred to as being "on" or "over" another layer or region, it can be directly on the other layer or region, or Other layers or regions are also included between it and another layer, another region. And, if the part is turned over, that layer, one area, will be "below" or "beneath" another layer, another area.

An embodiment of the present invention provides a display panel assembly 100. FIG. 1 is a schematic top view of a display panel assembly provided according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional schematic diagram taken along A-A in FIG. 1 . The display panel assembly 100 includes a display panel 110 and a photosensitive device 120 .

The display panel 110 includes a photosensitive device integration area FA. Optionally, as shown in FIG. 1 , the display panel 110 may include a display area DA and a non-display area NA surrounding the periphery of the display area DA. The display area DA may include a photosensitive device integration area FA and a normal display area OA. In this embodiment, the normal display area OA is arranged around the photosensitive device integration area FA. In other embodiments, the relative positions of the normal display area OA and the photosensitive device integration area FA may be other situations, for example, the normal display area OA is half surrounded by Photosensitive device integration area FA settings. The shape of the photosensitive device integration area FA can be correspondingly set according to actual design requirements, and its shape includes, but is not limited to, a circle, an ellipse, a rectangle, and the like.

As shown in FIG. 2 , the display panel 110 includes opposite display surfaces DS and non-display surfaces NS. The photosensitive device 120 is located on the side where the non-display surface NS of the display panel 110 is located. The photosensitive surface PS of the photosensitive device 120 is disposed toward the display panel 110 , and the orthographic projection of the photosensitive device 120 on the non-display surface NS of the display panel 110 is located in the photosensitive device integration area FA.

The display panel 110 may be a self-luminous display panel, such as an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, a display panel using a light emitting diode (Light Emitting Diode, LED) device, and the like.

The display panel assembly 100 may include a display state and a light-sensing state. In the display state, both the normal display area OA and the photosensitive device integration area FA of the display panel 110 display images, and the photosensitive device 120 may not work. In the photosensitive state, the photosensitive device 120 starts to work, wherein the light passes through the photosensitive device integration area FA of the display panel 110 and reaches the photosensitive device 120 .

The photosensitive device 120 may be an optical fingerprint identification device. When the display panel assembly 100 is in the photosensitive state, the display panel 110 emits light from the display surface DS, the light emitted from the display panel 110 is reflected on the surface of the finger, and the light reflected on the surface of the finger passes through the display panel 110 and is received by the optical fingerprint identification device. The optical fingerprint identification device can generate different identification information according to the difference in the reflection of light by the valleys and ridges of the fingerprint path, so as to identify different fingerprint path information. It should be noted that, according to the display panel assembly 100 of the embodiment of the present invention, the photosensitive device 120 is not limited to the optical fingerprint identification device of the above example, but can also be other photosensitive devices such as an infrared light sensor and a proximity light sensor.

The display panel assembly 100 further includes a filter film 130 , and the filter film 130 is located between the photosensitive surface PS of the photosensitive device 120 and the display panel 110 . The filter film 130 is configured such that the transmittance of the first light is greater than the transmittance of the second light, wherein the wavelength of the first light is within the wavelength range of the recognizable light of the photosensitive device 120, and the wavelength of the second light is within the wavelength range of the photosensitive device 120. Outside the wavelength range of light that can be recognized by the device 120 .

In the embodiment of the present invention, "the wavelength of the second light is outside the wavelength range of the light that can be recognized by the photosensitive device" actually means that the wavelength of the second light is outside the wavelength range of the light that is sensitive enough to be recognized by the photosensitive device, that is, the photosensitive device needs The recognition effect equivalent to the recognition of the first light can only be achieved by receiving the second light whose intensity is significantly higher than that of the first light. For example, the recognition sensitivity of the photosensitive device 120 to the second light is less than 50% of the recognition sensitivity to the first light.

According to the display panel assembly 100 of the embodiment of the present invention, when the display panel assembly 100 is in a light-sensing state, the first light can sufficiently pass through the filter film 130 to reach the light-sensing device 120 to ensure that the light-sensing device 120 can accurately identify the information in the first light. When the display panel assembly 100 is in the display state, when the light passing through the display panel 110 passes through the filter film 130 , the transmittance of the second light is lower than the transmittance of the first light, thereby reducing the amount of light reaching the photosensitive device 120 . The total amount of light, correspondingly, the reflected light from the surface of the photosensitive device 120 toward the display panel 110 is also reduced, and the reflected light needs to enter the display panel 110 through the filter film 130 again, thereby reducing the amount of light entering the display panel 110 from the photosensitive device 120 side again. amount of light. Therefore, compared with the prior art, the display panel assembly 100 of the embodiment of the present invention greatly reduces the amount of light irradiated to the display panel 110 from the photosensitive device 120 side, reduces the influence of this part of the light on the display effect, and improves the display effect .

In some embodiments, the filter film 130 is configured to have a transmittance of more than 85% for the first light, and a transmittance of less than 15% for the second light. Optionally, the filter film 130 is configured to have a transmittance of 90% or more for the first light, and a transmittance of 10% or less for the second light.

3 is a schematic cross-sectional view of a first light passing through a filter film of a display panel assembly provided according to an embodiment of the present invention. In FIG. 3 , the first light rays on opposite sides of the filter film 130 are shown by dotted arrows, wherein The light amount of the first light ray is proportional to the number of dashed arrows in the same direction, and the number of dashed arrows in the figure is only a principle example.

4 is a schematic cross-sectional view of the second light passing through the filter film of the display panel assembly provided according to an embodiment of the present invention. In FIG. 4 , the second light rays on opposite sides of the filter film 130 are shown by dotted arrows, wherein The light amount of the first light ray is proportional to the number of dashed arrows in the same direction, and the number of dashed arrows in the figure is only a principle example.

Optionally, the filter film 130 is configured to transmit the first light and absorb at least part of the second light. As shown in FIG. 3 , when the first light passes through the filter film 130 , it can almost completely pass through the filter film 130 , which ensures that the photosensitive device 120 can accurately identify the information in the first light. As shown in FIG. 4 , when the second light passing through the display panel 110 passes through the filter film 130 , at least part of the second light is absorbed, so the reflected light from the surface of the photosensitive device 120 toward the display panel 110 is also reduced. The reflected light needs to enter the display panel 110 through the filter film 130 again, so that the second light in the reflected light is absorbed twice, reducing the amount of light entering the display panel 110 from the photosensitive device 120 side. By reducing the amount of light irradiated to the display panel 110 from the side of the photosensitive device 120 , the influence of this part of the light on the characteristics of the semiconductor devices in the display panel 110 can be reduced, thereby reducing the display difference between the photosensitive device integration area FA and other display areas, and alleviating the display The brightness of the panel 110 is displayed unevenly (mura).

The display panel 110 may include an array substrate 111 . The array substrate 111 includes transistors. In the embodiment of the present invention, the filter film 130 is configured such that the transmittance of the first light is greater than the transmittance of the second light. The sensitivity of the transistor to at least part of the second light is greater than the sensitivity to the first light, that is, the influence of at least part of the second light on the transistor characteristics is greater than the effect of the first light on the transistor characteristics under the same brightness . The light in the display panel 110 illuminates the photosensitive device 120, and then is reflected back to the display panel 110 by the photosensitive device 120. It needs to pass through the filter film 130 twice, thereby greatly reducing the light from the photosensitive device 120 back to the display panel 110. The light that has a great influence on transistor characteristics in the light-sensitive device integration area FA makes the transistor characteristics of the photosensitive device integration area FA consistent with the transistor characteristic areas of other display areas, and reduces the display effect difference between the photosensitive device integration area FA and other display areas.

The sensitivity of a transistor to light of a certain wavelength can be reflected by the change in the characteristics of the transistor when the light of this wavelength illuminates the transistor before and when the transistor is illuminated at the same brightness, that is, the higher the sensitivity of the transistor to a certain wavelength of light, the more Under the irradiation of light of this wavelength with the same brightness, the transistor characteristics change more. For example, in some embodiments, the photosensitive device 120 is an optical fingerprint identification device, the identifiable light of the optical fingerprint identification device is green light (wavelength is approximately 520 nm to 580 nm), the first light includes green light, and the second light It may include other visible light except green light, that is, the second light may include light with wavelength smaller than green light (wavelength smaller than 520 nm) and/or light with wavelength larger than green light (wavelength larger than 580 nm). For example, the second light may include red light and blue light, wherein the transistors of the array substrate 111 are more sensitive to blue light than to green light. In the above example, the filter film 130 can allow a sufficient amount of green light to pass through, so that the optical fingerprint identification device can normally perform optical fingerprint identification. At the same time, the filter film 130 cuts off or absorbs the red light and the blue light in the light, reduces the blue light from the non-display surface DS side of the display panel 110 which has a great influence on the transistor characteristics, and reduces the photosensitive device. The display effect difference between the integration area FA and other display areas.

It can be understood that, according to the specific difference of the photosensitive device 130, the identifiable light is not limited to the green light in the above example, but can also be light in other wavelength ranges. Correspondingly, the specific wavelength range of the first light, the The specific wavelength ranges are not limited to the above examples.

In some embodiments, in addition to the array substrate 111, the display panel 110 may further include a light-emitting element layer 112 on the array substrate 111, wherein the light-emitting element layer 112 includes a variety of light-emitting elements with different light-emitting colors. When the display panel 110 is a In the case of an OLED display panel, the light-emitting element is an OLED light-emitting element. In some embodiments, the plurality of light-emitting elements with different light-emitting colors may include a red-emitting light-emitting element, a green-emitting light-emitting element, and a blue-emitting light-emitting element. In the display state, various light-emitting elements display the picture according to the data information of the picture to be displayed. When the display panel assembly 100 is in a light-sensing state, the wavelength range of the light emitted by the various light emitting elements overlaps with the wavelength range of the first light. For example, the photosensitive device 120 is a fingerprint recognition module, which can recognize that the light is green light, and the first light is green light. In the photosensitive state, various light-emitting elements emit green light, or at least green light.

In some embodiments, the display panel assembly 100 further includes a support film 140 and a flexible buffer layer 150 . The support film 140 is located on the side where the non-display surface NS of the display panel 110 is located. The flexible buffer layer 150 is located on the side of the support film 140 away from the display panel 110 . The flexible buffer layer 150 includes a through hole 151 , and the orthographic projection of the outline of the through hole 151 on the non-display surface NS of the display panel 110 is located in the photosensitive device integration area FA. In some embodiments, the support film 140 is a light-transmitting material layer, and the flexible buffer layer 150 may be a material layer such as silica gel or foam. The flexible buffer layer 150 is, for example, black foam, which can absorb a large amount of light irradiated on the surface of the flexible buffer layer 150 . In the display state, part of the light irradiated from the display panel 110 toward the photosensitive device 120 is absorbed by the flexible buffer layer 150 in the normal display area OA, and part of the light passes through the through hole 151 of the flexible buffer layer 150 , and the second light in the second light is filtered The light film 130 at least partially absorbs the light from the non-display surface DS side of the display panel 110 , which has a great influence on transistor characteristics and greatly reduces the influence of the light on the display effect of the display panel 110 .

FIG. 5 is a schematic top view of a display panel assembly according to another embodiment of the present invention, and FIG. 6 is a schematic cross-sectional schematic view taken along the direction B-B in FIG. 5 . The display panel assembly 100 includes a display panel 110 , a photosensitive device 120 and a filter film 130 . Most of the structure of the display panel assembly provided by another embodiment is the same as the structure of the display panel assembly provided by the foregoing one embodiment, and the differences between the two will be described below, and the similarities will not be described in detail.

Different from the previous embodiment, in this embodiment, the filter film 130 includes a first surface S1 facing the display panel 110 and a second surface S2 facing the photosensitive device 120 . The display panel assembly 100 also includes an anti-reflection film 160 . The anti-reflection film 160 is disposed on at least one of the first surface S1 and the second surface S2 of the filter film 130 . For example, in this embodiment, the anti-reflection film 160 is disposed on the first surface S1 of the filter film 130 .

By disposing the anti-reflection film 160 , the first light identifiable by the photosensitive device 120 can more easily pass through the filter film 130 , thereby improving the recognition sensitivity of the photosensitive device 120 . At the same time, the second light is still absorbed or cut off by the filter film 130, which can still reduce the display effect difference between the photosensitive device integration area FA and other display areas.

In the above embodiment, the filter film 130 is located between the photosensitive surface PS of the photosensitive device 120 and the display panel 110, wherein the filter film 130 may be an independent film layer, and the filter film 130 may be made of materials including organic dyes form. In some embodiments, the filter film 130 may be connected to the non-display surface DS of the display panel 110 , and may also be connected to the support film 140 or the flexible buffer layer 150 . For example, the filter film 130 may be disposed on the side of the flexible buffer layer 150 . inside the through hole 151 . In some embodiments, the filter film 130 may also be connected to the photosensitive device 120 . For example, the filter film 130 is integrated and disposed on the side where the photosensitive surface PS of the photosensitive device 120 is located, thereby improving the correlation between the filter film 130 and the photosensitive device 120 . , design and manufacture at the same time, and are applied in various display panel assemblies 100 in a modular manner.

FIG. 7 is a schematic top view of a display panel assembly provided according to still another embodiment of the present invention, and FIG. 8 is a schematic cross-sectional view taken along the C-C direction in FIG. 7 . The display panel assembly 100 includes a display panel 110 , a photosensitive device 120 and a filter film 130 . Most of the structure of the display panel assembly provided by another embodiment is the same as the structure of the display panel assembly provided by the previous embodiment. The differences between the two will be described below, and the similarities will not be described in detail.

Different from the previous embodiment, in this embodiment, the support film 140 is multiplexed into the filter film 130 at least in the area corresponding to the photosensitive device integration area FA. For example, in this embodiment, the entire support film 140 is multiplexed into the filter film 130 , and in other embodiments, the support film 140 is multiplexed into the filter film 130 in a region corresponding to the photosensitive device integration area FA. By multiplexing at least part of the support film 140 into the filter film 130, the correlation between the filter film 130, the support film 140 and the display panel 110 can be improved, and the overall thickness of the display panel assembly 100 can be reduced to a certain extent, which is convenient for the display panel The component 100 meets the requirements of thin and light design.

The portion of the support film 140 multiplexed into the filter film 130 may have various film structures. Taking the overall multiplexing of the support film 140 as the filter film 130 as an example for illustration, in some embodiments, the support film 140 includes a base layer, and at least one of dye particles and a dye layer, wherein the dye particles are dispersed in the base layer, The dye layer is located on the surface of the base layer facing the display panel 110 and/or on the surface of the base layer facing away from the display panel 110 .

9 is a schematic cross-sectional view of a support film multiplexed into a filter film provided according to an embodiment of the present invention. In this embodiment, the support film 140 includes a base layer 131 and dye particles 132 dispersed in the base layer 131 , wherein the base layer 131 is a light-transmitting material layer, such as polyester resin (Polyethylene terephthalate, PET), and the dye particles 132 can absorb at least Part of the second light, the dye particles 132 may be organic dye particles. The process of forming the support film 140 may be adding a material containing dye particles 132 to the light-transmitting material forming the base layer 131 , and obtaining the support film 140 dispersed with the dye particles 132 while forming the base layer 131 . The dye particles 132 may be homogeneously dispersed in the base layer 131 or heterogeneously dispersed in the base layer 131 according to different requirements of the actual implementation.

10 is a schematic cross-sectional view of a support film multiplexed into a filter film provided according to another embodiment of the present invention. In this embodiment, the support film 140 includes a base layer 131 and a dye layer 133 . The base layer 131 is a light-transmitting material layer, such as PET. The dye layer 133 is located on the surface of the base layer 131 facing the display panel 110 and/or the surface of the base layer 131 away from the display panel 110 , and the dye layer 133 may be an organic dye layer. The formation of the dye layer 133 may be by coating an organic dye on at least one surface of the base layer 131 , so as to obtain the support film 140 that is multiplexed into the filter film 130 .

An embodiment of the present invention further provides an electronic device, for example, a terminal electronic device such as a mobile phone and a tablet computer. The electronic device includes the display panel assembly 100 of any of the above-mentioned embodiments. The display panel assembly 100 includes a display panel 110 and a photosensitive device 120, and further includes a filter film 130 located between the photosensitive surface PS of the photosensitive device 120 and the display panel 110, the filter film 130 is configured to transmit the first light The rate is greater than the transmittance of the second light, wherein the wavelength of the first light is within the wavelength range of the identifiable light of the photosensitive device 120 , and the wavelength of the second light is outside the wavelength range of the identifiable light of the photosensitive device 120 . When the display panel assembly 100 is in the photosensitive state, the first light can sufficiently pass through the filter film 130 to reach the photosensitive device 120, ensuring that the photosensitive device 120 can accurately identify the information in the first light. When the display panel assembly 100 is in the display state, when the light passing through the display panel 110 passes through the filter film 130 , the transmittance of the second light is lower than the transmittance of the first light, thereby reducing the amount of light reaching the photosensitive device 120 . The total amount of light, correspondingly, the reflected light from the surface of the photosensitive device 120 toward the display panel 110 is also reduced, and the reflected light needs to enter the display panel 110 through the filter film 130 again, thereby reducing the amount of light entering the display panel 110 from the photosensitive device 120 side again. amount of light. Therefore, compared with the prior art, the display panel assembly 100 of the embodiment of the present invention greatly reduces the amount of light irradiated to the display panel 110 from the photosensitive device 120 side, reduces the influence of this part of the light on the display effect, and improves the display effect .

In accordance with the embodiments of the present invention as described above, these embodiments do not exhaustively describe all the details and do not limit the invention to only the specific embodiments described. Obviously, many modifications and variations are possible in light of the above description. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can make good use of the present invention and modifications based on the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (10)

1. A display panel assembly, comprising:

the display panel comprises a display surface and a non-display surface which are opposite, and the display panel comprises a photosensitive device integration area;

the photosensitive device is positioned on the side of the non-display surface of the display panel, the photosensitive surface of the photosensitive device faces the display panel, and the orthographic projection of the photosensitive device on the non-display surface of the display panel is positioned in the photosensitive device integration area; and

the light filtering film is arranged between the light sensing surface of the light sensing device and the display panel, and is configured to have a transmittance for first light greater than a transmittance for second light, wherein the wavelength of the first light is within the identifiable light wavelength range of the light sensing device, and the wavelength of the second light is outside the identifiable light wavelength range of the light sensing device.

2. The display panel assembly of claim 1, wherein the filter film is configured to transmit the first light and absorb at least a portion of the second light.

3. The display panel assembly of claim 1, wherein the display panel comprises an array substrate comprising transistors, wherein the transistors are more sensitive to at least some of the second light than to the first light.

4. The display panel assembly of claim 1, wherein the light sensing device is an optical fingerprint recognition device, the first light comprises green light, and the second light comprises light having a wavelength less than the green light.

5. The display panel assembly according to claim 1, wherein the display panel comprises an array substrate and a light emitting element layer on the array substrate, the light emitting element layer comprising a plurality of light emitting elements emitting light of different colors,

when the display panel assembly is in a photosensitive state, the wavelength ranges of the light rays emitted by the multiple light-emitting elements are overlapped with the wavelength range of the first light ray.

6. The display panel assembly of claim 1, wherein the filter film comprises a first surface facing the display panel and a second surface facing the photosensitive device, the display panel assembly further comprising:

and the antireflection film is arranged on at least one of the first surface and the second surface of the filter film.

7. The display panel assembly of claim 1, further comprising:

a support film; the non-display surface of the display panel is positioned at the side; and

the flexible buffer layer is positioned on the side, away from the display panel, of the support film and comprises a through hole, and the orthographic projection of the outline of the through hole on the non-display surface of the display panel is positioned in the photosensitive device integration area.

8. The display panel assembly of claim 7, wherein the support film is reused as the filter film at least in a region corresponding to the integration region of the photosensitive device.

9. The display panel assembly of claim 8, wherein the support film comprises a base layer and at least any one of:

dye particles dispersed in the base layer;

a dye layer located on a surface of the base layer facing the display panel and/or a surface of the base layer facing away from the display panel;

preferably, the dye particles are yellow dye particles; the dye layer is a yellow dye layer.

10. An electronic device characterized by comprising the display panel assembly according to any one of claims 1 to 9.

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