Patent Description:
In the optical sensor field, a quantity of signals received by an optical sensor directly affects optical feature recognition accuracy of the optical sensor. Currently, a degree of integration is increasingly higher, integrating an optical sensor into an apparatus with another function has been a conventional means. However, when the optical sensor is integrated into the apparatus with another function, a quantity of optical signals received by the optical sensor is affected by more other structures, and directly affects optical feature recognition accuracy.

For example, in the display field, an optical sensor is integrated into a display panel, to implement biometric feature recognition (for example, fingerprint recognition or facial recognition), proximity light detection, ambient light detection, or the like. However, a line and a device related to light emission inside the display panel severely hinder the optical sensor from receiving an optical signal.

Therefore, how to improve optical feature recognition accuracy of an apparatus integrated with an optical sensor is still an urgent problem to be resolved.

<CIT> relates to a texture recognition device, comprising a backlight element, configured to provide first backlight; a light constraint element, configured to perform a light divergence angle constraint process on the first backlight to obtain second backlight with a divergence angle within a preset angle range, wherein the second backlight is transmitted to a detection object; and a photosensitive element, configured to detect the second backlight reflected by a texture of the detection object to recognize a texture image of the texture of the detection object.

In view of this, this application provides a module integrated with an optical sensor, a display panel, and a display apparatus.

According to a first aspect, this application provides a module integrated with an optical sensor, as defined in claim <NUM>. Preferred modules integrated with an optical sensor are defined in dependent claims <NUM> to <NUM>.

According to a second aspect, this application provides a display panel according to claim <NUM>. Preferred display panels are defined in dependent claims <NUM> to <NUM>.

In the module integrated with an optical sensor, the display panel, and the display apparatus that are provided in the embodiments of this application, the light guide plate that is located on the optical sensor and that is away from a side on which an optical signal is received includes the first part and the second part. The second part that protrudes from the optical sensor may receive an optical signal around the optical sensor, and enable the optical signal to be totally reflected inside the light guide plate. The first part that is blocked by the optical sensor may enable the optical signal inside the light guide plate to be emitted by the light guide plate after a total reflection path of the optical signal inside the light guide plate is changed, and to mainly arrive at the optical sensor. In the embodiments of this application, the light guide plate is disposed below the optical sensor, and the light guide plate is specially designed, so that intensity of an optical signal received by the optical sensor can be increased, and optical feature recognition precision of the module, the display panel, and the display apparatus can be increased.

To describe the technical solutions in embodiments of this application more clearly, the following briefly describes the accompanying drawings that need to be used by the embodiments. It is clear that, the accompanying drawings in the following descriptions show merely some embodiments of this application, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

To better understand the technical solutions of this application, the following describes embodiments of this application in detail with reference to the accompanying drawings.

Terms used in embodiments of this application are merely for the purpose of describing specific embodiments, but are not intended to limit this application. Terms "a", "the", and "this" in singular forms in embodiments of this application and the appended claims are also intended to include plural forms, unless otherwise stated in the context clearly.

It should be understood that the term "and/or" used in this specification is merely an association relationship for describing associated objects, and indicates that there may be three relationships. For example, A and/or B may indicate the following three cases: Only A exists, both A and B exist, and only B exists. In addition, the character "/" in this specification usually indicates an "or" relationship between the associated objects.

<FIG> is a schematic diagram of a module integrated with an optical sensor according to an embodiment of this application.

As shown in <FIG>, the module integrated with the optical sensor <NUM> provided in this embodiment of this application includes at least one optical sensor <NUM> and at least one light guide plate <NUM>. The light guide plate <NUM> and the optical sensor <NUM> are arranged in a thickness direction Z of the module. The optical sensor <NUM> receives an optical signal from a first side of the module, and the light guide plate <NUM> is disposed on a side that is of the optical sensor <NUM> and that is away from the first side. For example, as shown in <FIG>, an upper side of the module is the first side of the module, and the optical sensor <NUM> receives an optical signal transmitted from the upper side, and the light guide plate <NUM> is disposed on a lower side of the optical sensor <NUM>.

In this embodiment of this application, the optical signal is a signal that is to be transmitted to the optical sensor <NUM> and that is to be converted by the optical sensor <NUM> into an electrical signal, to implement optical feature recognition, and may be specifically near-infrared light, infrared light, visible light, ultraviolet light, or the like.

The light guide plate <NUM> includes a first part <NUM> and a second part <NUM>. To be specific, the light guide plate <NUM> is a continuous whole, and the light guide plate <NUM> is divided into the first part <NUM> and the second part <NUM> based on different locations of the light guide plate <NUM> and the optical sensor <NUM>. The second part <NUM> does not overlap the optical sensor <NUM> in the thickness direction Z of the module. In other words, the second part <NUM> is a part protruding from the optical sensor <NUM>. In addition, an included angle between at least a partial side edge <NUM> of the second part <NUM> and the thickness direction Z of the module is α, and α><NUM>°. The second part <NUM> is configured to receive an optical signal that is from the first side of the module and that is around the optical sensor <NUM>. In addition, a tilt angle of the partial side edge <NUM> of the second part <NUM> is set to match a refractive index of the light guide plate <NUM>, to convert the received optical signal into light that is totally reflected inside the light guide plate <NUM>.

The light guide plate <NUM> is a material with a high refractive index. For example, when the light guide plate <NUM> is made of an acrylic material, the refractive index of the light guide plate <NUM> is <NUM>. Based on a refractive index formula, when an optical signal that is incident on the light guide plate <NUM> is totally reflected inside the light guide plate <NUM>, an incident angle of the optical signal needs to be greater than <NUM>°. Based on this, the tilt angle of the at least partial side edge <NUM> of the second part <NUM> may be set.

The first part <NUM> at least partially overlaps the optical sensor <NUM> in the thickness direction Z of the module. In other words, at least a part of the first part <NUM> is blocked by the optical sensor <NUM>. In addition, a surface that is of the first part <NUM> and that is away from the optical sensor <NUM> is a first protrusion structure <NUM>. The first protrusion structure <NUM> may change a transmission path of light that is totally reflected inside the light guide plate <NUM>. In other words, the first protrusion structure <NUM> may damage total reflection of the light inside the light guide plate <NUM>, so that the light is emitted by the light guide plate <NUM>. In addition, because the surface that is of the first part <NUM> and that is away from the optical sensor <NUM> is provided with the first protrusion structure <NUM>, the optical signal whose transmission path is damaged inside the light guide plate <NUM> is mainly emitted from a surface that is of the first part <NUM> and that is close to the optical sensor <NUM>, and mainly arrives at the optical sensor <NUM>.

The first protrusion structure <NUM> may be specifically a printed white dot or an injection-molded small raised point.

In this embodiment of this application, the second part <NUM> that protrudes from the optical sensor <NUM> may receive an optical signal around the optical sensor <NUM>, and enable the optical signal to be totally reflected inside the light guide plate <NUM>. The first part <NUM> that is blocked by the optical sensor <NUM> may enable the optical signal inside the light guide plate <NUM> to be emitted by the light guide plate <NUM> after a total reflection path of the optical signal inside the light guide plate <NUM> is changed, and to mainly arrive at the optical sensor <NUM>. In this embodiment of this application, the light guide plate <NUM> is disposed below the optical sensor <NUM>, and the light guide plate <NUM> is specially designed, so that intensity of an optical signal received by the optical sensor <NUM> can be increased, and optical feature recognition precision of the module can be increased.

In an embodiment of this application, as shown in <FIG>, the first protrusion structure <NUM> is disposed on only the first part <NUM> that overlaps the optical sensor <NUM>, and the first protrusion structure <NUM> is disposed on the surface that is of the first part <NUM> and that is away from the optical sensor <NUM>. In this case, an optical signal received by the light guide plate <NUM> may be emitted from an area that is of the light guide plate <NUM> and that corresponds to the optical sensor <NUM>, to effectively increase a signal quantity of optical signals received by the optical sensor <NUM>.

<FIG> is a schematic diagram of another module integrated with an optical sensor <NUM> according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, at least two second protrusion structures <NUM> are included on a side that is of a first part <NUM> and that is close to the optical sensor <NUM>. Large-angle light exists in an optical signal that is transmitted inside a light guide plate <NUM> and whose total reflection path is damaged by a first protrusion structure <NUM>. The second protrusion structure <NUM> may change an emission angle of the large-angle light, so that more light emitted by the light guide plate <NUM> is incident on the optical sensor <NUM>.

In other words, the second protrusion structure <NUM> may change a transmission path of a received optical signal, to specifically enable an emergent angle of the optical signal to be less than an incident angle. The second protrusion structure <NUM> may be a prism structure such as a tapered structure or a hemispherical structure. The second protrusion structure <NUM> may be made of acrylic resin.

It should be noted that, in this embodiment of this application, the first protrusion structure <NUM> may be a part of the light guide plate <NUM>. To be specific, the first protrusion structure <NUM> is obtained by designing a surface that is of the first part <NUM> and that is away from the optical sensor <NUM>. The second protrusion structure <NUM> may alternatively be a part of the light guide plate <NUM>. To be specific, the second protrusion structure <NUM> is obtained by designing a surface that is of the first part <NUM> and that is close to the optical sensor <NUM>. In addition, the second protrusion structure <NUM> may alternatively be a structure different from the light guide plate <NUM>. To be specific, the second protrusion structure <NUM> is additionally disposed on an upper surface that is of the light guide plate <NUM> and that is close to the optical sensor <NUM>.

<FIG> is a schematic diagram of still another module integrated with an optical sensor <NUM> according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, the module includes a plurality of optical sensors <NUM>, and a light guide plate <NUM> covers at least two optical sensors <NUM> in a thickness direction Z of the module. In other words, one light guide plate <NUM> corresponds to at least two optical sensors <NUM>.

In this embodiment, the light guide plate <NUM> further includes a third part <NUM>. The third part <NUM> covers an area between the at least two optical sensors <NUM> in the thickness direction of the module. In other words, the third part <NUM> of the light guide plate <NUM> is a part located between adjacent first parts <NUM> that belong to a same light guide plate <NUM>.

The first protrusion structure <NUM> does not overlap the third part <NUM> in the thickness direction Z of the module. In other words, the first protrusion structure <NUM> is not disposed on a third part <NUM> that is of the light guide plate <NUM> and that is located between adjacent optical sensors <NUM>, to prevent an optical signal received by the light guide plate <NUM> from being emitted by the light guide plate <NUM> from an area in which no optical sensor <NUM> is disposed.

It can be understood that when the light guide plate <NUM> covers the at least two optical sensors <NUM>, the light guide plate <NUM> that covers the at least two optical sensors <NUM> includes at least two first parts <NUM>, and one optical sensor <NUM> corresponds to one first part <NUM>.

In an implementation of this embodiment, the module includes one light guide plate <NUM>, and the light guide plate <NUM> may be an entire-surface structure that covers all optical sensors <NUM>.

<FIG> is a schematic diagram of yet another module integrated with an optical sensor <NUM> according to an embodiment of this application.

In another embodiment of this application, as shown in <FIG>, the module includes a plurality of optical sensors <NUM> and a plurality of light guide plates <NUM>, and the optical sensors <NUM> and the light guide plates <NUM> are disposed in a one-to-one correspondence.

In an implementation of this embodiment, as shown in <FIG>, in the optical sensor <NUM> and the light guide plate <NUM> that are correspondingly disposed, a projection of the second part <NUM> surrounds a projection of the optical sensor <NUM> in the thickness direction Z of the module, and an included angle between each side edge <NUM> of the second part <NUM> and the thickness direction Z of the module is greater than <NUM>°. In other words, all optical signals around the optical sensor <NUM> may arrive at the light guide plate <NUM>, and are received and used by the light guide plate <NUM>.

In still another embodiment of this application, the module includes a plurality of optical sensors <NUM> and a plurality of light guide plates <NUM>. In addition, at least one of the light guide plates <NUM> covers at least two optical sensors <NUM> in a thickness direction Z of the module, and the at least one of the light guide plates <NUM> is disposed in a one-to-one correspondence with the optical sensors <NUM>. <FIG> is a schematic diagram of still yet another module integrated with an optical sensor <NUM> according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, when the module includes at least two optical sensors <NUM>, the two optical sensors <NUM> are disposed adjacent to each other and correspond to different light guide plates <NUM>. In the two light guide plates <NUM>, an included angle between a thickness direction Z of the module and a side edge that is of one light guide plate <NUM> and that is close to the other light guide plate <NUM> is basically equal to <NUM>°. In other words, in a process error range, an included angle between the thickness direction Z of the module and a side edge located between two light guide plates <NUM> in side edges of the two light guide plates <NUM> that are disposed adjacent to each other is basically <NUM>°. For example, as shown in <FIG>, a right side edge of a left light guide plate <NUM> is a side edge close to a right light guide plate <NUM>, and the side edge is basically parallel to the thickness direction Z of the module; and a left side edge of the right light guide plate <NUM> is a side edge close to the left light guide plate <NUM>, and the side edge is also basically parallel to the thickness direction Z of the module. In this way, crosstalk between optical signals above different optical sensors <NUM> can be avoided.

<FIG> is a schematic diagram of an optical sensor <NUM> and a light guide plate <NUM> according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, the optical sensor <NUM> is a thin film transistor device, and the optical sensor <NUM> includes an active layer <NUM>, a gate <NUM>, a source <NUM>, and a drain <NUM>. The active layer <NUM> may generate different carrier concentrations based on a quantity of received optical signals, so that the optical sensor <NUM> generates different electrical signals, to implement optical feature recognition. The active layer <NUM> may be specifically at least one of an amorphous silicon film, a polycrystalline silicon film, or a metal oxide semiconductor layer.

In an implementation of this embodiment, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> is located on a side that is of the optical sensor <NUM> and that is away from the light guide plate <NUM>. In other words, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> is located on a side that is of the active layer and that receives an optical signal. In this case, the gate <NUM> blocks the optical signal, and a quantity of optical signals received by the optical sensor <NUM> is affected. In this implementation, an inventive concept of this application is used. To be specific, the light guide plate <NUM> provided in any one of the foregoing embodiments is disposed below the optical sensor <NUM>, to significantly increase a quantity of optical signals of a structure of the optical sensor <NUM>.

In this embodiment of this application, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> may be disposed in contact with the active layer <NUM> of the thin film transistor device. In other words, no insulation layer is disposed between the gate <NUM> and the active layer <NUM>. In another embodiment of this application, the optical sensor <NUM> may alternatively be at least one of an organic photosensitive device and a photodiode device.

<FIG> is a schematic diagram of a display panel according to an embodiment of this application. <FIG> is a schematic diagram of another display panel according to an embodiment of this application. <FIG> is a schematic cross-sectional diagram corresponding to <FIG>. <FIG> is a schematic cross-sectional diagram corresponding to <FIG>.

An embodiment of this application further provides a display panel. As shown in <FIG>, the display panel provided in this embodiment of this application includes a display area AA and a non-display area BB, and the non-display area BB surrounds the display area AA. The display area AA includes a plurality of light-emitting subpixels <NUM>, and the area is mainly configured to perform light-emitting display. The non-display area BB may further include a black frame area B2 and a middle area B1 located between the black frame area B2 and the display area AA.

At least one of the display area AA and the non-display area BB includes at least one optical sensor <NUM> and at least one light guide plate <NUM>, and the light guide plate <NUM> and the optical sensor <NUM> are arranged in a thickness direction Z of the display panel. In other words, the display panel includes at least one optical sensor <NUM> and at least one light guide plate <NUM>, and the at least one optical sensor <NUM> and the at least one light guide plate <NUM> are disposed in an area in which at least one of the display area AA and the non-display area BB is located.

For example, as shown in <FIG> and <FIG>, the optical sensor <NUM> and the light guide plate <NUM> are disposed in the non-display area. In this case, the optical sensor <NUM> may preferably serve as a device for ambient light detection or proximity light detection, to avoid impact of light emitted by the display area AA on ambient light detection or proximity light detection.

For example, as shown in <FIG> and <FIG>, the optical sensor <NUM> and the light guide plate <NUM> are disposed in the display area AA. To be specific, the display area AA includes the optical sensor <NUM>, and the optical sensor <NUM> located in the display area AA may be configured to perform biometric feature recognition, for example, fingerprint recognition. In a biometric feature recognition process, the light-emitting subpixel <NUM> in the display area AA may serve as a detection light source for biometric feature recognition, and emit detection light to a biological object. Detection light reflected by the biological object is incident on the optical sensor <NUM> and the light guide plate <NUM>, to implement biometric feature recognition.

For example, some optical sensors <NUM> and some light guide plates <NUM> are disposed in the non-display area BB, and the other optical sensors <NUM> and the other light guide plates <NUM> are disposed in the display area AA.

In addition, when at least some optical sensors <NUM> and at least some light guide plates <NUM> are disposed in the non-display area BB, the optical sensors <NUM> and the light guide plates <NUM> may be disposed in the middle area B1 as shown in <FIG> and <FIG>, or may be disposed in the black frame area B2, or may be partially disposed in the middle area B1 and partially disposed in the black frame area B2.

The optical sensor <NUM> receives an optical signal from a first side of the display panel, and the light guide plate <NUM> is disposed on a side that is of the optical sensor <NUM> and that is away from the first side. For example, as shown in <FIG> and <FIG>, a side of a light-emitting surface of the display panel is the first side of the display panel. In this case, the optical sensor <NUM> receives an optical signal transmitted from the side of the light-emitting surface of the display panel, and the light guide plate <NUM> is disposed on a side that is of the optical sensor <NUM> and that is away from the light-emitting surface of the display panel.

The light guide plate <NUM> includes a first part <NUM> and a second part <NUM>. To be specific, the light guide plate <NUM> is a continuous whole, and the light guide plate <NUM> is divided into the first part <NUM> and the second part <NUM> based on different locations of the light guide plate <NUM> and the corresponding optical sensor <NUM>.

The second part <NUM> does not overlap the optical sensor <NUM> in the thickness direction Z of the display panel. In other words, the second part <NUM> is a part protruding from the optical sensor <NUM>. In addition, an included angle between at least a partial side edge <NUM> of the second part <NUM> and the thickness direction Z of the display panel is α, and α><NUM>°. The second part <NUM> is configured to receive an optical signal that is from the first side of the display panel and that is around the optical sensor <NUM>. In addition, a tilt angle of the partial side edge <NUM> of the second part <NUM> is set to match a refractive index of the light guide plate <NUM>, to convert the received optical signal into light that is totally reflected inside the light guide plate <NUM>.

The first part <NUM> at least partially overlaps the optical sensor <NUM> in the thickness direction Z of the display panel. In other words, at least a part of the first part <NUM> is blocked by the optical sensor <NUM>. In addition, a surface that is of the first part <NUM> and that is away from the optical sensor <NUM> is a first protrusion structure <NUM>. The first protrusion structure <NUM> may change a transmission path of light that is totally reflected inside the light guide plate <NUM>. In other words, the first protrusion structure <NUM> may damage total reflection of the light inside the light guide plate <NUM>, so that the light is emitted by the light guide plate <NUM>. In addition, because the surface that is of the first part <NUM> and that is away from the optical sensor <NUM> is provided with the first protrusion structure <NUM>, the optical signal whose transmission path is damaged inside the light guide plate <NUM> is mainly emitted from a surface that is of the first part <NUM> and that is close to the optical sensor <NUM>, and mainly arrives at the optical sensor <NUM>.

In this embodiment of this application, the second part <NUM> that protrudes from the optical sensor <NUM> may receive an optical signal around the optical sensor <NUM>, and enable the optical signal to be totally reflected inside the light guide plate <NUM>. The first part <NUM> that is blocked by the optical sensor <NUM> may enable the optical signal inside the light guide plate <NUM> to be emitted by the light guide plate <NUM> after a total reflection path of the optical signal inside the light guide plate <NUM> is changed, and to mainly arrive at the optical sensor <NUM>. In this embodiment of this application, the light guide plate <NUM> is disposed below the optical sensor <NUM>, and the light guide plate <NUM> is specially designed, so that intensity of an optical signal received by the optical sensor <NUM> can be increased, and optical feature recognition precision of the display panel can be increased.

In this embodiment of this application, the display panel integrated with the optical sensor <NUM> may implement biometric feature recognition (for example, fingerprint recognition or facial recognition), proximity light detection, ambient light detection, or the like.

In this embodiment of this application, in the thickness direction Z of the display panel, the display panel includes a substrate <NUM>, a protective cover <NUM>, and a functional layer <NUM> located between the substrate <NUM> and the protective cover <NUM>. The light-emitting subpixel <NUM> is disposed at the functional layer <NUM>, and a photosensitive device may be integrated into the functional layer <NUM>. The substrate <NUM> may be a rigid substrate or a flexible substrate.

In addition, the light guide plate <NUM> may be attached to a side that is of the substrate <NUM> and that is away from the functional layer <NUM>, or may be attached to a side that is of the protective cover <NUM> and that is away from the functional layer <NUM>. When an optical signal received by the photosensitive device comes from a side that is of the display panel and that is close to the protective cover <NUM>, the light guide plate <NUM> may be attached to the side that is of the substrate <NUM> and that is away from the functional layer <NUM>. When an optical signal received by the photosensitive device comes from a side that is of the display panel and that is close to the substrate <NUM>, the light guide plate <NUM> may be attached to the side that is of the protective cover <NUM> and that is away from the functional layer <NUM>.

In an implementation, as shown in <FIG> and <FIG>, a display manner of the display panel is top emission, and the photosensitive device receives the optical signal on the side of the light-emitting surface of the display panel. In other words, a side on which the protective cover <NUM> is located is the light-emitting surface of the display panel, and the photosensitive device receives the optical signal from the side of the light-emitting surface of the display panel. In this case, the light guide plate <NUM> may be attached to the substrate <NUM>.

<FIG> is another schematic cross-sectional diagram corresponding to <FIG>. <FIG> is another schematic cross-sectional diagram corresponding to <FIG>.

In an embodiment of this application, as shown in <FIG> and <FIG>, at least two second protrusion structures <NUM> are included on a side that is of the first part <NUM> and that is close to the optical sensor <NUM>. Large-angle light exists in an optical signal that is transmitted inside the light guide plate <NUM> and whose total reflection path is damaged by the first protrusion structure <NUM>. The second protrusion structure <NUM> may change an emission angle of the large-angle light, so that more light emitted by the light guide plate <NUM> is incident on the optical sensor <NUM>.

A specific structure, material, and disposing manner of the second protrusion structure <NUM> may be the same as a specific structure and disposing manner of the second protrusion structure <NUM> in the module integrated with the optical sensor <NUM> in the foregoing embodiments, and details are not described herein again.

<FIG> is a schematic cross-sectional diagram of a display panel according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, a non-display area BB includes a plurality of optical sensors <NUM>, and in a thickness direction Z of the display panel, a light guide plate <NUM> covers at least two optical sensors <NUM> located on two opposite sides of a display area AA. In other words, at least one optical sensor <NUM> is disposed in each of non-display areas BB located on two opposite sides of the display area AA, and optical devices respectively disposed in the non-display areas BB on the two opposite sides may be covered by a same light guide plate <NUM>.

In this embodiment, the light guide plate <NUM> further includes a third part <NUM>, and at least a part of the third part <NUM> is located in the display area AA. In the thickness direction Z of the display panel, a first protrusion structure <NUM> does not overlap the third part <NUM> located in the display area AA. In other words, the first protrusion structure <NUM> is not disposed on a part that is of the light guide plate <NUM> and that is located in the display area AA, so that an optical signal received by the light guide plate <NUM> can be prevented from being emitted by the light guide plate <NUM> in the display area AA. A waste caused when the optical signal received by the light guide plate <NUM> is not used for optical feature recognition is avoided. In addition, impact exerted, on a normal display picture in the display area AA, when an optical signal used for optical feature recognition is emitted from the display area AA is avoided.

In addition, a second protrusion structure <NUM> does not overlap the third part <NUM>.

In an implementation of this embodiment, the display panel includes one light guide plate <NUM>, and the light guide plate <NUM> may be an entire-surface structure that covers all optical sensors <NUM>.

In another embodiment of this application, the display panel includes a plurality of optical sensors <NUM> and a plurality of light guide plates <NUM>, and the optical sensors <NUM> and the light guide plates <NUM> are disposed in a one-to-one correspondence.

In an implementation of this application, in the optical sensor <NUM> and the light guide plate <NUM> that are correspondingly disposed, a projection of a second part <NUM> surrounds a projection of the optical sensor <NUM> in the thickness direction Z of the display panel, and an included angle between each side edge <NUM> of the second part <NUM> and the thickness direction Z of the display panel is greater than <NUM>°. In other words, all optical signals around the optical sensor <NUM> may arrive at the light guide plate <NUM>, and are received and used by the light guide plate <NUM>, to effectively increase a signal quantity of optical signals received by the optical sensor <NUM>.

In still another embodiment of this application, the display panel includes a plurality of optical sensors <NUM> and a plurality of light guide plates <NUM>. In addition, at least one of the light guide plates <NUM> covers at least two optical sensors <NUM> in a thickness direction Z of the display panel, and the at least one of the light guide plates <NUM> is disposed in a one-to-one correspondence with the optical sensors <NUM>.

<FIG> is a schematic cross-sectional diagram of another display panel according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, a non-display area BB includes at least one optical sensor <NUM> and at least one light guide plate <NUM>, and a side edge that is of the light guide plate <NUM> disposed in the non-display area BB and that is close to a display area AA is parallel to a thickness direction of the display panel. In other words, in a process error range, an included angle between the thickness direction Z of the display panel and the side edge close to the display area AA in side edges of the light guide plate <NUM> disposed in the non-display area BB is basically <NUM>°. For example, as shown in <FIG>, a right side edge of the light guide plate <NUM> disposed in the non-display area BB is a side edge close to the display area AA, and the side edge is basically parallel to the thickness direction Z of the display panel.

Therefore, when light that is emitted by the display panel and that is used to perform light-emitting display arrives at the non-display area BB, a case in which the light is emitted to the optical sensor <NUM> after being totally reflected inside the light guide plate <NUM> basically does not occur, to avoid impact of the light for light-emitting display in the display area AA on optical feature recognition accuracy of the non-display area BB.

<FIG> is a schematic cross-sectional diagram of still another display panel according to an embodiment of this application.

In an embodiment of this application, as shown in <FIG>, an optical sensor <NUM> is a thin film transistor device, and the optical sensor <NUM> includes an active layer <NUM>, a gate <NUM>, a source <NUM>, and a drain <NUM>. The active layer <NUM> may generate different carrier concentrations based on a quantity of received optical signals, so that the optical sensor <NUM> generates different electrical signals, to implement optical feature recognition. The active layer <NUM> may be specifically at least one of an amorphous silicon film, a polycrystalline silicon film, or a metal oxide semiconductor layer.

In an implementation of this embodiment, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> is located on a side that is of the optical sensor <NUM> and that is away from a light guide plate <NUM>. In other words, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> is located on a side that is of the active layer and that receives an optical signal. In this case, the gate <NUM> blocks the optical signal, and a quantity of optical signals received by the optical sensor <NUM> is affected. In this implementation, an inventive concept of this application is used. To be specific, the light guide plate <NUM> provided in any one of the foregoing embodiments is disposed below the optical sensor <NUM>, to significantly increase a quantity of optical signals of a structure of the optical sensor <NUM>.

Further, the thin film transistor device that serves as the optical sensor <NUM> may be manufactured at a same layer as at least a part of a structure of a thin film transistor device <NUM> in a light-emitting subpixel <NUM>. The thin film transistor device <NUM> in the light-emitting subpixel <NUM> may provide a light emitting signal for a light emitting device <NUM> in the light-emitting subpixel <NUM>. As shown in <FIG>, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> may be disposed at a same layer as the gate <NUM> of the thin film transistor device <NUM> in the light-emitting subpixel <NUM>, and the source <NUM> and the drain <NUM> of the thin film transistor device that serves as the optical sensor <NUM> may be disposed at a same layer as the source <NUM> and the drain <NUM> of the thin film transistor device <NUM> in the light-emitting subpixel <NUM>.

The active layer <NUM> of the thin film transistor device that serves as the optical sensor <NUM> and the active layer <NUM> of the thin film transistor device <NUM> in the light-emitting subpixel <NUM> may be disposed at a same layer or disposed at different layers. In addition, in this embodiment of this application, the gate <NUM> of the thin film transistor device that serves as the optical sensor <NUM> may be disposed in contact with the active layer <NUM> of the thin film transistor device. In other words, no insulation layer is disposed between the gate <NUM> and the active layer <NUM>.

In another embodiment of this application, the optical sensor <NUM> may alternatively be at least one of an organic photosensitive device and a photodiode device.

Claim 1:
A module integrated with an optical sensor (<NUM>), comprising:
at least one optical sensor, wherein the optical sensor receives an optical signal from a first side of the module; and
at least one light guide plate (<NUM>), wherein the light guide plate and the optical sensor are arranged in a thickness direction (Z) of the module, and the light guide plate is disposed on a side that is of the optical sensor and that is away from the first side, wherein
the light guide plate comprises a first part (<NUM>) and a second part (<NUM>); and in the thickness direction of the module, the first part at least partially overlaps the optical sensor, and the second part does not overlap the optical sensor; and
a surface that is of the first part and that is away from the optical sensor is a first protrusion structure (<NUM>), and an included angle between at least a partial side edge (<NUM>) of the second part and the thickness direction of the module is greater than <NUM>°, wherein the second part is configured to receive an optical signal that is from the first side of the module and that is around the optical sensor, wherein a tilt angle of the partial side edge of the second part corresponds to <NUM>° minus the included angle and is set to match a refractive index of the light guide plate, to convert the received optical signal into light that is totally reflected inside the light guide plate.