CN106950738B

CN106950738B - Display device and mobile electronic terminal

Info

Publication number: CN106950738B
Application number: CN201710273532.6A
Authority: CN
Inventors: 张海平
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-04-24
Filing date: 2017-04-24
Publication date: 2020-12-25
Anticipated expiration: 2037-04-24
Also published as: CN106950738A

Abstract

The invention discloses a display device. The display device comprises a display panel, a first opening, an image acquisition module and a first optical lens. The display panel comprises an opposite substrate and an array substrate which are oppositely arranged, and a plurality of pixel units are arranged on the opposite substrate and the array substrate at positions corresponding to the image display area. The first opening extends into the array substrate at a position corresponding to the pixel unit. The image acquisition module is accommodated in the first opening and acquires light rays for taking images from the opposite substrate and the array substrate. The first optical lens is arranged on the opposite substrate corresponding to the first opening position and used for providing light rays for shooting images for the image acquisition module.

Description

Display device and mobile electronic terminal

Technical Field

The invention relates to the technical field of display, in particular to a display technology for improving screen occupation ratio.

Background

A Camera (Camera), also called a computer Camera, a computer eye, etc., is widely used in video conference, remote medical treatment, real-time monitoring, etc. as an image or video input device. In recent years, with the development of internet technology, the network speed has been increasing, and with the maturity of the photosensitive imaging device technology, the two communication parties can have image and sound conversations and communications with each other through the camera in the network, and in addition, people can also use the current popular digital images and audio-visual processing, thereby playing more and more important roles in the life and work of people.

The current camera technology is generally applied to the field of display equipment, such as mobile phones, notebooks and household/commercial televisions, a front camera of the display equipment is generally arranged on a frame outside a liquid crystal panel, so that the display equipment at least needs to reserve the position of the camera at the peripheral position of the display equipment, and the position of the camera cannot be used for image display, therefore, the display equipment provided with the camera cannot meet the application requirement of a user on a narrow frame or even a frameless display screen of the display equipment, and the screen occupation ratio of the display equipment cannot be improved.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a display device with a large screen area.

Further, a mobile terminal comprising the aforementioned display device is provided.

A display device comprises a display panel, a first opening, an image acquisition module and a first optical lens. The display panel comprises an opposite substrate and an array substrate which are oppositely arranged, and a plurality of pixel units are arranged on the opposite substrate and the array substrate at positions corresponding to the image display area. The first opening extends into the array substrate at a position corresponding to the pixel unit. The image acquisition module is accommodated in the first opening and acquires light rays for taking images from the opposite substrate and the array substrate. The first optical lens is arranged on the opposite substrate corresponding to the first opening position and used for providing light rays for shooting images for the image acquisition module.

A mobile electronic terminal comprises the display device.

Compared with the prior art, the image acquisition modules are arranged at the position of the display area in the display panel, so that the area of the non-display area can be effectively reduced, the proportion of the display area in the display device is improved, and the screen occupation ratio is also improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic plan view of a display device according to a first embodiment of the invention.

Fig. 2 is a schematic cross-sectional view of the display device shown in fig. 1 along line II-II.

Fig. 3 is a schematic structural diagram of the image acquisition unit shown in fig. 2.

Fig. 4 is a schematic cross-sectional structure diagram of a display device according to a second embodiment of the invention.

Fig. 5 is a schematic view of an optical path structure of the display medium layer as the second optical lens in an alternative embodiment shown in fig. 4.

FIG. 6 is a block diagram of a control driving circuit for controlling the image capturing module shown in FIG. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, fig. 1 is a schematic plan view of a display device according to a first embodiment of the invention, and fig. 2 is a schematic cross-sectional view taken along line II-II in fig. 1.

As shown in fig. 1-2, the display device 10 includes a display panel 11 and an image capturing module 13.

The display panel 11 correspondingly includes a display area 10a for displaying an image and a wiring area 10b for providing a conductive wire, wherein the display area 10a is provided with a plurality of pixel units 101 arranged in a matrix, the pixel units 101 are electrically connected to a driving circuit through wirings (not shown), and image display data is obtained from the driving circuit to display the image. The wiring region 10b is shielded by a light shielding material and does not display an image. The image obtaining module 13 is partially accommodated in the display panel 11 corresponding to the display area.

Specifically, the display panel 11 includes an array substrate 111, a display medium layer 112, and an opposite substrate 113, wherein the display medium layer 112 is sandwiched between the array substrate 111 and the opposite substrate 113. In this embodiment, the array substrate 111 and the opposite substrate 113 are made of transparent materials. The display medium layer 112 is formed by a liquid crystal molecular layer. Of course, the display medium layer 112 may be made of Organic Light-Emitting material (OLED), plasma, etc., but is not limited thereto.

The array substrate 111 includes a first surface 1111 and a second surface 1112 opposite to each other, wherein the first surface 1111 is disposed adjacent to the opposite substrate 113 than the second surface 1112, that is, the first surface 111 is disposed adjacent to the display medium layer 112. The first surface 1111 of the array substrate 111 is provided with a display element 114 corresponding to each pixel unit 101, and the display element 114 may be a thin film transistor, a pixel electrode, or the like.

The opposite substrate 113 includes a third surface 1131 and a fourth surface 1132 which are opposite to each other, wherein the third surface 1131 is closer to the array substrate 111 than the fourth surface 1132, that is, the third mark 1131 is disposed close to the display medium layer 112.

The third surface 1131 of the opposite substrate 113 is provided with a filter element 115 and the like corresponding to the display element 114, of course, the opposite substrate 113 may also be provided with a common electrode layer, and the common electrode layer cooperates with the pixel electrode in the array substrate to generate a vertical electric field to drive the liquid crystal molecules in the display medium layer 112 to rotate, so as to achieve the purpose of displaying images. Of course, alternatively, the common electrode layer may also be directly disposed on the array substrate 111, and the common electrode layer and the pixel electrode cooperate to form a parallel electric field to drive the liquid crystal molecules in the display medium layer 112 to rotate.

The display panel 11 includes a first opening 102 corresponding to the display region of the pixel unit 101, specifically, the first opening 102 entirely penetrates through the array substrate 111, in other words, the first opening 102 penetrates through the first surface 1111 from the second surface 1112 along the thickness direction of the display panel 11. For convenience of description, the thickness direction is labeled and defined as a first direction F, so the first direction F includes a first sub-direction F1 and a second sub-direction F2 in opposite directions. It is understood that the first sub-direction f1 is a light emitting direction of the light for image display of the display panel 11, that is, a direction in which the light for image display is transmitted from the array substrate 111 and the display medium layer 112 to the opposite substrate 113 in sequence and emitted from the opposite substrate 113; the second sub-direction f2 is a direction in which the external light is transmitted to the display panel 11, that is, the light sequentially enters the display medium layer 112 and the array substrate 111 from the opposite substrate 113.

The first opening 102 is filled with the image capturing module 13, that is, the second surface 1112 of the array substrate 111 of the image capturing module 13 is placed in the first opening 102 until the top end of the image capturing module 13 is flush with the first surface 1111 of the array substrate 111. The image capturing module 13 captures the light transmitted from the second sub-direction f2 from the display medium layer 112 and the opposite substrate 113 for image capturing.

Preferably, the display device 10 further includes a hollow sealing container 14, the sealing container 14 penetrates through the first opening 102 and abuts against the opposite substrate 113 and the array substrate 111 respectively, and is configured to contain and fix the image capturing module 13, and seal the display medium layer 112 in the display area 10a of the display device 10 except the first opening 102, so as to prevent the display medium layer 112 from leaking from the first opening 102.

Specifically, the seal accommodating body 14 includes a ring-shaped sidewall 141 extending in the thickness direction of the display panel, and the ring-shaped sidewall 141 forms a hollow cavity 142. The image capturing module 13 is fixed in the cavity 142, and the sidewall 141 includes two opposite ends, one of the two opposite ends abuts against the third surface 1131 of the opposite substrate 113, and the other end abuts against the first surface 1111 of the array substrate 111, so as to effectively seal the display medium layer 112 outside the corresponding first opening 102 and prevent the display medium layer 112 from leaking from the first opening 102.

Correspondingly, a position of the first surface 1111 of the array substrate 111 corresponding to the first opening 102 is provided with a position-limiting groove 1113, and a position of the third surface 1131 of the opposite substrate 113 corresponding to the first opening is provided with a position-limiting groove 1133. Wherein, the shape of the two

spacing grooves

1113 and 1133 is the same as that of the side wall. Therefore, when the display panel 11 is assembled, two ends of the sidewall 141 of the seal accommodating body 14 respectively abut against the two limiting

grooves

1113 and 1133.

Preferably, the side wall 141 of the hermetic container 14 abuts against the two ends of the opposite substrate and the array substrate and is provided with a light shielding material, and the

spacing grooves

1113 and 1133 may be provided with a light shielding material, so as to effectively prevent the light leakage of the display panel 10.

Alternatively, an end of the sidewall 141 of the hermetic container 14 corresponding to the side of the array substrate 111 may be flush with the second surface 1112, so as to facilitate the hermetic container 14 to be mounted on the first opening 102.

Preferably, the opposite substrate 113 is further provided with a touch sensing layer 15 on the second surface 1132, and the touch sensing layer 15 is used for sensing a touch operation outside the display panel 11. The touch sensing layer 15 may be a single-layer sensing structure or a double-layer sensing structure. In addition, the touch sensing layer 15 may also be disposed on the first surface 1131 of the opposite substrate 113 to form an In Cell structure.

Please refer to fig. 3, which is a functional structure diagram of the image capturing module 13 shown in fig. 1.

As shown in fig. 3, the image capturing module 13 includes a supporting substrate 131, an image sensing unit 132, a light filtering element 133, an optical lens 134, an image data processing unit 135, and a package housing 136. The image sensing unit 132 and the optical lens 134 are disposed on the supporting substrate 131. The optical Lens 134 is used for capturing light outside the display panel 11 and forming an optical image to be transmitted to the light filtering element 133, so as to achieve the effect of a Lens (Lens).

The light filtering element 133 is disposed on the image sensing unit 132 and is used for filtering light entering the image capturing module 13. The image sensing unit 132 is used for converting the light after the color filtering process into an electrical signal, that is, converting the optical signal into an electrical signal. The image sensing unit 132 may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) Device.

The image data processing unit 135 performs noise reduction, amplification, digital image conversion, and the like on the basis of the electric signal corresponding to the optical image output from the image sensing unit 132. In this embodiment, the image data Processing unit 135 includes a Digital-to-analog converter (a/D) for converting an electrical Signal of an optical image into a Digital image Signal, a Digital Signal Processor (DSP), a compression encoding processor, and the like. The digital signal processor mainly performs optimization processing on digital image signal parameters. The compression coding processor is mainly used for coding and compressing the digital image signals subjected to optimization processing according to rules so as to ensure the correct transmission of the signals.

The package housing 136 at least partially covers the carrier substrate 131, the image sensing unit 132, the optical lens 134 of the light filtering element 133 and the image data processing unit 135, so as to fix and protect the aforementioned elements.

Preferably, the image sensing module 13 further includes a plurality of signal transmission terminals 13a, and the signal transmission terminals 13a are electrically connected to the image data processing unit 135, and are used for transmitting the processed image signals to an external circuit through corresponding wires 13 b. The signal transmission terminal 13a penetrates through the carrier substrate 131 and is electrically connected to the image data processing unit 135.

Alternatively, when one end of the image sensor module 13 is flush with the second surface 1112, the conductive wires 13b may be directly connected to the array substrate 111 to be connected to an external circuit through conductive traces on the array substrate 111, or the signal transmission terminals 13a are directly electrically connected to the conductive traces on the array substrate 111, so as to simplify the connection between the image sensor module 13 and the external circuit.

In this embodiment, the image acquiring module 13 is a camera (camera) or an infrared imager. It can be understood that the image obtaining module 13 also needs to include a common Central Processing Unit (CPU), a memory (RAM), a Flash memory (Flash), and the like, which is not described in detail in this embodiment.

Referring to fig. 4, fig. 4 is a schematic cross-sectional structure view of a display device according to a second embodiment of the invention. In this embodiment, the display device 20 has substantially the same structure as the display device 10, except that the structure of the first opening 202 in the display device 20 is different from that of the first opening 102, and the first opening 202 does not completely penetrate through the array substrate 211. In addition, the opposite substrate 213 of the display device 20 is further provided with an optical element corresponding to the image capturing module 23, so that the image capturing module 23 can capture an image with better effect.

Specifically, as shown in fig. 4, the first opening 202 is still disposed corresponding to the display area 20a of the display panel 21, that is, the first opening 202 is disposed corresponding to the region where the pixel unit 201 is disposed.

The first opening 202 is a groove formed on the array substrate 211 and located on the second surface 2112, that is, the first opening 202 only extends into a portion of the array substrate 211 and does not completely penetrate through the array substrate 211. The second opening 202 is spaced apart from the first surface 2111 of the array substrate 211 by a certain distance, and a part of the array substrate 211 material is remained.

Further, just opposite to the first opening 202 of the array substrate 211, the opposite substrate 213 includes a second opening 203, the second opening 203 extends into a portion of the opposite substrate 213 and does not completely penetrate through the opposite substrate 213, that is, the second opening 203 is a groove formed on the opposite substrate 213 and located on the second surface 2132, and a certain distance is left between the second opening 203 and the first surface 2131 of the opposite substrate 213, and a portion of the material of the opposite substrate 213 is remained.

The first optical element 22 is disposed in the second opening 203 and fixed in the opposite substrate 213 through the second opening 203. The first optical element 22 is used for converging light rays to provide the image acquisition module 23, so as to improve the light ray sampling utilization and the image display effect of the image acquisition module 23. Wherein the first optical element 22 can be fixed in the second opening 203 by a transparent adhesive. Of course, the first optical element 22 may be formed integrally with the opposing substrate 213, as a variant.

Please refer to fig. 5, which is a schematic diagram illustrating an optical path structure of the second optical lens 32 with the display medium layer 312 in an alternative embodiment shown in fig. 4. In this embodiment, the display medium layer 32 is a liquid crystal molecular layer. The liquid crystal molecule layer forms a 'planar' liquid crystal lens, and light beams are converged or diverged by utilizing the birefringence characteristic of the liquid crystal molecules and the arrangement characteristic along with the change of electric field distribution, so that the effect of the optical lens is realized.

For convenience of description, three-dimensional stereo coordinates, that is, X, Y, Z coordinates perpendicular to each other, are defined, wherein an X direction is defined as a first direction, a Y direction is defined as a second direction, and a Z direction is defined as a third direction.

Specifically, the liquid crystal molecules form a deflection angle forming an obtuse angle in the XZ plane with respect to the first pixel region 301a, so that the first light L1 incident from the counter substrate 311 is directed to the image acquisition module 33.

In the second pixel region 301b, the liquid crystal molecules form a deflection angle forming an acute angle in the XZ plane, and the first light L2 incident from the counter substrate 311 is directed to the image acquisition module 33.

With respect to the third pixel region 301c, the liquid crystal molecules form a deflection angle of 90 degrees in the XY plane, so that the first light L3 incident from the counter substrate 311 is directed to the image acquisition module 33.

Therefore, the display medium layer 32 can effectively converge the light incident from the opposite substrate 313, and transmit the converged light to the image acquisition module, so that the light utilization rate of the image acquisition module 33 is effectively increased, and the display effect of the image is improved.

Please refer to fig. 6, which is a block diagram of a control driving circuit for controlling the image capturing module 33 shown in fig. 5. Specifically, referring to fig. 6, the control driving circuit 50 includes a detecting unit 51, a controlling unit 53 and a driving unit 55.

The detecting unit 51 is used for detecting whether the image capturing module 33 is activated, and when the image capturing module 33 is detected to be activated, the detecting unit 51 outputs a first detecting signal to the control unit 53.

The control unit 53 is electrically connected to the detecting unit 51 and the driving unit 55, respectively, and is configured to receive the first detection signal by the sub-detecting unit 51 and output a driving signal to the driving unit 55 according to the first detection signal.

The driving unit 55 is electrically connected to the first pixel unit 301a, the second pixel unit 301b, and the third pixel unit 301c, and when receiving the driving signal, the driving unit 55 respectively outputs a first driving signal, a second driving signal, and a third driving signal to the first pixel unit 301a, the second pixel unit 301b, and the third pixel unit 301c, so as to control the second optical lens 32 formed by the display medium layer 312 (liquid crystal layer) corresponding to the first opening 302 to converge and transmit the light to the image capturing module 33.

The driving unit 55 comprises a data driving unit 551 and a scan driving unit 552 common voltage driving unit 553, wherein the pixel unit 301 is respectively common voltage driving unit 553 with the data driving unit 551 and the scan driving unit 552, and the data driving unit 552 is used for outputting data voltage to the pixel unit 301; the scan driving unit 552 is used for controlling the pixel unit 301 to be turned on and receiving a data voltage; the common voltage driving unit 553 is used to supply a common voltage to the pixel unit 301.

Each pixel unit 301 includes a pixel electrode 3011 and a common electrode 3012, where the pixel electrode 3011 is used to load a data voltage, the common electrode 3012 is used to load a common voltage, and the data voltage loaded on the pixel electrode 3011 and the common voltage loaded on the common electrode 3012 cooperate to generate an electric field to drive the liquid crystal molecules to generate a deflection angle as shown in fig. 4, so as to achieve the light converging effect of the second optical lens 32.

It is understood that the driving unit 55 drives the second optical lens 32 independently of the data driving circuit, the scan driving circuit, and the common voltage driving circuit of the display panel 31 to realize the function of the optical lens. Therefore, when the detecting unit 51 does not detect that the image capturing unit 33 is activated, the driving unit 55 does not need to output the corresponding data, scanning and common voltage driving signals to the second optical lens 32. The second optical lens 32 receives normal image data and cooperates with other display areas (not shown) of the display panel 31 to perform a complete image display.

In the foregoing embodiment, the display devices 10 and 20 may be applied to a mobile electronic device, which may be a mobile phone, a notebook computer, a tablet computer, or the like, but not limited thereto.

Compared with the prior art, the image acquisition modules 13 to 33 are all arranged at the position of the display area 10a in the display panels 11 to 31, so that the area of the non-display area can be effectively reduced, and the proportion of the display area in the display devices 10 to 30 is improved, namely, the screen occupation ratio is improved.

Furthermore, the optical lens is formed by utilizing the display medium in the display panel, so that the image acquisition effect of the image acquisition module is effectively improved.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. A display device, comprising:

the display panel comprises an opposite substrate and an array substrate which are oppositely arranged, wherein a plurality of pixel units are arranged on the opposite substrate and the array substrate at positions corresponding to the image display area;

the first opening is correspondingly arranged in the display area, and the position part of the pixel unit extends into the array substrate;

the image acquisition module is accommodated in the first opening in the display area and acquires light rays for taking images from the opposite substrate and the array substrate so as to acquire the images, wherein the image acquisition module at least comprises a plurality of signal transmission ends, the signal transmission ends are used for transmitting image signals, corresponding to the light rays for taking the images, in the image acquisition module to an external circuit through a conducting wire, one end of the image acquisition module is flush with the surface, far away from the opposite substrate, of the array substrate, and the conducting wire is directly connected to the array substrate and is connected to the external circuit through a conducting wire on the array substrate;

and the first optical lens is arranged on the opposite substrate corresponding to the first opening position and used for providing light rays for shooting the image for the image acquisition module.

2. The display device according to claim 1, wherein the opposite substrate further comprises a second opening, the second opening faces the first opening, the second opening partially extends into the opposite substrate, and the first optical lens is accommodated in the second opening.

3. The display device according to claim 2, wherein an opening direction of the second opening is opposite to an opening direction of the first opening.

4. The display device according to claim 2, wherein a display medium layer is interposed between the opposite substrate and the array substrate, and the display medium layer corresponding to the first opening constitutes a second optical lens.

5. The display device according to claim 4, wherein the display medium layer is a liquid crystal molecular layer, and the second optical lens is a liquid crystal lens formed by the liquid crystal molecular layer.

6. The display device according to claim 5, further comprising a control driving module, wherein the control driving module is configured to control the display medium layer corresponding to the first opening to form the second optical lens when the image capturing module is in the image capturing state.

7. The display device according to claim 6, wherein the control driving module comprises a detecting unit, a control unit and a driving unit, the detecting unit is used for detecting whether the image capturing module is in an image capturing state, and when the image capturing module is detected to be in the image capturing state, the detecting unit outputs a first detection signal to the control unit, the control unit is electrically connected to the detecting unit and the driving unit respectively and is used for outputting a control signal to the driving unit according to the first detection signal, the driving unit is electrically connected to the plurality of pixel units corresponding to the second opening position, the driving unit provides a corresponding driving signal to the plurality of pixel units corresponding to the second opening position according to the control signal, and the plurality of pixel units corresponding to the second opening position generate a corresponding electric field according to the driving signal to control the display medium The second optical lens is formed by the rotation of the layer with a corresponding angle.

8. The display device according to claim 7, wherein the plurality of pixel units corresponding to the second opening position includes a first pixel unit, a second pixel unit and a third pixel unit, and the driving unit outputs a corresponding first driving signal, a corresponding second driving signal and a corresponding third driving signal to the first pixel unit, the second pixel unit and the third pixel unit according to the control signal, so that the display medium layers corresponding to the first pixel unit, the second pixel unit and the third pixel unit generate different deflection angles, and thereby the light transmitted from the opposite substrate is converged or diverged and transmitted to the image obtaining module.

9. The display device according to any one of claims 1 to 8, wherein the image capturing module comprises at least a carrier substrate, an image sensing unit and a package casing, the image sensing unit is disposed on the surface of the carrier substrate, the package casing partially covers the substrate and the image sensing unit, and the image sensing unit is configured to convert light entering the image capturing module into an electrical signal.

10. The display device according to claim 9, wherein the image capturing module further comprises a light filter for filtering light incident from the opposite substrate and transmitting the filtered light to the image sensing unit.

11. A mobile electronic terminal, characterized in that it comprises a display device according to any one of claims 1-10.