Patent Description:
The present invention relates to the technical field of communication devices, and in particular, to an electronic device.

Electronic devices such as a smart phone and a tablet computer have become indispensable products in people's life, and the screen-to-body ratio of the electronic devices is one of the important factors affecting user experience. Therefore, how to increase the screen-to-body of the electronic devices has become the design direction that the technicians in the art pay attention to.

In order to increase the screen-to-body ratio of existing electronic devices, the camera module can be disposed below the display module, and the display module is provided with a light-passing hole, so that it can be ensured that the camera module can work normally. The camera module mainly includes a bracket, a lens assembly, a light-shielding layer and other devices, wherein the lens assembly is mounted in the bracket, the light-shielding layer is mounted on the bracket, and the light-shielding layer is located above the lens assembly.

Due to a certain distance between the light-shielding layer and the display module, the light-passing hole formed in the display module needs to be larger than an inner diameter of the light-shielding layer. Meanwhile, due to an assembling error between the display module and the camera module, it is necessary to consider this assembling error and further enlarge the size of the light-passing hole when a hole is formed in the display module. Therefore, the light-passing hole formed in the existing display module is relatively large, resulting in relatively small screen-to-body ratio of the electronic device.

<CIT> discloses that an electronic device <NUM> which includes a display module <NUM>, a camera module <NUM>, and a seal <NUM>. The display module <NUM> includes a cover plate <NUM>, a display layer <NUM>, a backlight layer <NUM> and a support layer <NUM> which are sequentially stacked. The display module <NUM> is provided with a fitting hole <NUM> through the backlight layer <NUM> and the support layer <NUM>. The camera module <NUM> includes a fixing portion <NUM> and an extending portion <NUM>. The fixing portion <NUM> having a connecting end face <NUM> facing the cover plate <NUM>. The display layer <NUM> is provided with a light transmission channel S1 opposed to the fitting hole <NUM>. The support layer <NUM> includes a body portion <NUM> and a bending portion <NUM>. A light shielding glue <NUM> is disposed between one end of the bending portion <NUM> facing the display layer <NUM> and the display layer <NUM>, and the light shielding glue <NUM> is extends in the circumferential direction of the fitting hole <NUM>. The display layer <NUM> includes a first polarizer <NUM>, a first substrate <NUM>, a second substrate <NUM> and a second polarizer <NUM> which are sequentially stacked. A light transmission hole <NUM> is disposed at a position of the first polarizer <NUM> and the second polarizer <NUM> opposite to the light transmission channel S1. A routing <NUM> (such as a BM routing area) is disposed between the first substrate <NUM> and the second substrate <NUM>. And the light transmission hole <NUM> is also disposed at a position of the routing <NUM> opposite to the light transmission channel S1.

<CIT> discloses an image sensor module which includes: a lens member including a first surface and a second surface opposite to the first surface; a frame that holds the lens member; a diaphragm formed on the first surface of the lens member, the diaphragm including an opening and a light-shielding portion; an image sensor chip that receives light converged by the lens member; and a board upon which the image sensor chip is mounted, the board being fixed to the frame; where the light-shielding portion of the diaphragm is entirely held in contact with the lens member.

The present invention discloses an electronic device, so as to solve the problem of relatively small screen-to-body ratio of the electronic device.

To solve the foregoing problem, the present invention adopts the following technical solutions:
an electronic device which defined in claim <NUM>.

It is to be understood that both the forgoing general description and the following detailed description are exemplary only, and are not restrictive of the present disclosure.

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and descriptions thereof are used to explain the present invention, and do not constitute any improper limitation on the present invention. In the accompanying drawings:
<FIG> is a section view of part of a structure of an electronic device according to an embodiment of the present invention.

Description of reference numerals:
<NUM>-display module, <NUM>-first substrate, <NUM>-second substrate, <NUM>-wiring structure, <NUM>-light-emitting portion, <NUM>-light-transmitting cover plate, <NUM>-optical adhesive, <NUM>-polarizer, <NUM>-foam, <NUM>-camera module, <NUM>-camera body, <NUM>-light-entrance hole, <NUM>-bracket, <NUM>-light-sensing chip, <NUM>-light-shielding layer, <NUM>-second light-passing hole.

To make the objectives, technical solutions and advantages of the present invention clearer, the following clearly describes the technical solutions of the present invention with reference to the specific embodiments of the present invention and the corresponding accompanying drawings. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

The technical solutions disclosed by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in <FIG>, an embodiment of the present invention provides an electronic device. The electronic device may specifically include a display module <NUM> and a camera module <NUM>.

The display module <NUM> may specifically include a first substrate <NUM>, a second substrate <NUM> and a wiring structure <NUM>, wherein the first substrate <NUM> and the second substrate <NUM> are stacked, and the wiring structure <NUM> is disposed on a surface of the second substrate <NUM> facing the first substrate <NUM>. The first substrate <NUM> and the second substrate <NUM> may be glass plates, and a thin film transistor may be disposed on the second substrate <NUM>. The wiring structure <NUM> may be ring-shaped structure, the wiring structure <NUM> is provided with a first light-passing hole, and the first light-passing hole enables light to pass through, so that light in the external environment can enter the camera module <NUM>. The display module <NUM> may further include a light-emitting portion <NUM>, a light-transmitting cover plate <NUM>, an optical adhesive <NUM>, a polarizer <NUM> and foam <NUM>, wherein the light-emitting portion <NUM> may be disposed between the first substrate <NUM> and the second substrate <NUM>, and the light-emitting portion <NUM> may be an organic light-emitting layer; the polarizer <NUM> may be disposed on a surface of the first substrate <NUM> facing away from the second substrate <NUM>; the light-transmitting cover plate <NUM> is located on one side of the first substrate <NUM> away from the second substrate <NUM>, and the light-transmitting cover plate <NUM> may be connected to the polarizer <NUM> through the optical adhesive <NUM>; the foam <NUM> may be disposed on one side of the second substrate <NUM> away from the first substrate <NUM>, the foam <NUM> may adhere to the second substrate <NUM> and may be provided with an avoidance hole, and at least one part of the camera module <NUM> may be located in the avoidance hole, so that the influence on the normal work of the camera module <NUM> by stray light in the display module <NUM> is avoided; meanwhile, the space occupied by the camera module <NUM> can be reduced, so that the thickness of the electronic device can be reduced.

The camera module <NUM> may specifically include a camera body <NUM> and a light-shielding layer <NUM>, wherein the camera body <NUM> is provided with a light-entrance hole <NUM>, the second substrate <NUM> is located between the first substrate <NUM> and the camera body <NUM>, the light-shielding layer <NUM> is disposed on a surface of the second substrate <NUM> facing the camera body <NUM>, and the light-shielding layer <NUM> is provided with a second light-passing hole <NUM>. The camera body <NUM> may specifically include a bracket <NUM>, a lens assembly and a light-sensing chip <NUM>, the lens assembly is disposed on the bracket <NUM>, and the lens assembly may include a convex lens, a concave lens and other lenses, so that the light converging effect can be achieved; and the light-sensing chip <NUM> may be disposed in the bracket <NUM>, the light-sensing chip <NUM> is provided with a light-sensing area for sensing light, and the light-sensing chip <NUM> may convert an optical signal into an electrical signal, so that corresponding image information is acquired. Here, the second light-passing hole <NUM> enables light to pass through, so that light in the external environment can enter the camera module <NUM> and arrive at the light-sensing area of the light-sensing chip <NUM>, and a shooting function can be realized.

The wiring structure <NUM> and the light-shielding layer <NUM> can play a role in shielding light, and the first light-passing hole, the second light-passing hole <NUM> and the light-entrance hole <NUM> are arranged in the optical axis direction of the camera module <NUM>, so light in the external environment can sequentially pass through the first light-passing hole and the second light-passing hole <NUM>, and finally pass through the light-entrance hole <NUM> to enter the camera module <NUM>, and the camera module <NUM> can realize the shooting function. An orthographic projection of the second light-passing hole <NUM> on a plane perpendicular to the optical axis direction of the camera module <NUM> is within an orthographic projection of the light-entrance hole <NUM> on the plane perpendicular to the optical axis direction, and the orthographic projection of the second light-passing hole <NUM> on the plane perpendicular to the optical axis direction is within an orthographic projection of the first light-passing hole on the plane perpendicular to the optical axis direction. That is, during observation in the optical axis direction of the camera module <NUM>, an overall size of the first light-passing hole and an overall size of the light-entrance hole <NUM> are greater than an overall size of the second light-passing hole <NUM>. The size of the light-entrance hole <NUM> is slightly large. Such arrangement does not affect the screen-to-body ratio of the display module <NUM> and can ensure that light in the external environment enters the camera module <NUM> as much as possible. The second light-passing hole <NUM> will affect the screen-to-body ratio of the display module <NUM>; therefore, on the premise of meeting the shooting requirement of the camera module <NUM>, the second light-passing hole <NUM> may be set as small as possible, thereby reducing the occupancy rate of the light-shielding layer <NUM> on the display area and increasing the screen-to-body ratio of the electronic device. The first light-passing hole is located above the second light-passing hole <NUM>; therefore, the first light-passing hole is slightly larger than the second light-passing hole <NUM>, so that more light can enter the second light-passing hole <NUM> through the first light-passing hole, and the shooting effect of the camera module <NUM> is ensured better.

In the electronic device, the light-shielding layer <NUM> of the camera module <NUM> is disposed on the display module <NUM>. According to this design, on one hand, a distance between the light-shielding layer <NUM> and the display module <NUM> is nearly zero, so the first light-passing hole may be smaller; and on the other hand, there is no assembling error between the display module <NUM> and the light-shielding layer <NUM>, so it is unnecessary to consider the assembling error when the first light-passing hole is formed, the size of the first light-passing hole may be further reduced, and the screen-to-body ratio of the electronic device is higher. Meanwhile, after the size of the first light-passing hole is reduced, the appearance texture of the electronic device is improved, and the user experience is improved accordingly.

Referring to <FIG>, H=A+(B+D)×<NUM>, wherein H is the size of a hole on the appearance surface of the display module <NUM> which cannot be used for displaying, A is a hole diameter of the second light-passing hole <NUM>, B is a hole diameter difference value between the first light-passing hole and the second light-passing hole <NUM>, and D is a width of the wiring structure <NUM>. Since the field of view β of the camera module <NUM> is a fixed value, A is basically a fixed value; since the light-shielding layer <NUM> is disposed on the display module <NUM>, a distance Z between the wiring structure <NUM> and the light-shielding layer <NUM> is smaller than a distance between the wiring structure <NUM> and the light-shielding layer <NUM> in the background art; meanwhile, the field of view β of the camera module <NUM> is also a fixed value, so according to the Pythagorean theorem, B is reduced compared with the background art, that is, a hole diameter of the firs light-passing hole may be set smaller.

As mentioned above, the size of the first light-passing hole may be further reduced, and the specifically reduced amplitude may be flexibly selected according to the actual situation. In order to make the size of the first light-passing hole as small as possible without affecting light propagation, in an optional embodiment, in a section passing through the optical axis of the camera module <NUM>, a distance S between a hole wall of the first light-passing hole and a hole wall of the second light-passing hole <NUM> in a direction perpendicular to the optical axis is a product of h and tan α, wherein h is a thickness of the second substrate <NUM>, and α is an angle of refraction angle when light passes through the second substrate <NUM>. That is, the size of the first light-passing hole may just meet that light needing to enter the camera module <NUM> can be propagated to the second light-passing hole <NUM> through the first light-passing hole, which will not reduce the light entering the camera module <NUM> due to too small first light-passing hole and will not enlarge the hole on the appearance of the display module <NUM> that cannot be used for displaying due to too large first light-passing hole; therefore, this arrangement mode can meet the shooting requirement of the camera module <NUM> and also can further increase the screen-to-body ratio of the electronic device.

In the embodiment of the present invention, the outline shapes of the wiring structure <NUM> and the light-shielding layer <NUM> may be disposed flexibly, for example, the outline shapes may be a rectangle, a circle and an ellipse; meanwhile, the shapes of the first light-passing hole and the second light-passing hole may be selected flexibly, for example, the first light-passing hole and the second light-passing hole may be a rectangular hole, a circular hole, an elliptic hole and the like. In an optional embodiment, considering that the shape of the field of view of the camera module <NUM> is usually circular, so in order to adapt to the camera module <NUM> to further increase the screen-to-body ratio of the electronic device, the wiring structure <NUM> and the light-shielding layer <NUM> may be disposed in a ring-shaped structure. At this time, a radial width of the light-shielding layer <NUM> may be smaller than a radial width of the wiring structure <NUM>, so that too large light-shielding area caused by too large radial width of the light-shielding layer <NUM> can be avoided, and the above aim can be fulfilled.

Further, the orthographic projection of the light-entrance hole <NUM> on the plane perpendicular to the above optical axis direction may be within the orthographic projection of the first light-passing hole on the plane perpendicular to the optical axis direction, or the orthographic projection of the first light-passing hole on the plane perpendicular to the optical axis direction may be within the orthographic projection of the light-entrance hole <NUM> on the plane perpendicular to the above optical axis direction. Considering that light enters the light-entrance hole <NUM> in a gradual convergence manner, when the orthographic projection of the light-entrance hole <NUM> on the plane perpendicular to the above optical axis direction is within the orthographic projection of the first light-passing hole on the plane perpendicular to the above optical axis direction, it can be ensured that sufficient light enters the camera module <NUM>, and the size of the light-entrance hole <NUM> can be reduced appropriately , so that the overall size of the camera module <NUM> is reduced accordingly, and this arrangement is more beneficial to stacking of parts in the electronic device.

In order to improve the shooting effect of the camera module <NUM>, a distance between a focus of the camera body <NUM> and the light-shielding layer <NUM> in the above optical axis direction may be a preset value. That is, when the position of the light-shielding layer <NUM> changes, the position of the camera body <NUM> changes accordingly to ensure that the focus of the camera body <NUM> and the light-shielding layer <NUM> keep mutually matched positions, so that the shooting effect is improved. In the embodiment of the present invention, since the light-shielding layer <NUM> moves up into the display module <NUM>, the distance between the camera body <NUM> and the display module <NUM> can be further reduced, and the display module <NUM> and the camera module <NUM> are distributed more compact, so that it is more beneficial to stacking of parts in the electronic device.

The forming manner of the light-shielding layer <NUM> has various implementation solutions. In an optional embodiment, the light-shielding layer <NUM> may be formed by a film-coating process. That is, the light-shielding layer <NUM> may be a film-coating structure. This film-coating structure is convenient to form, and the thickness of the formed light-shielding layer <NUM> is smaller, so that it is more beneficial to control the thickness of the electronic device. Specifically, the shielding layer <NUM> is disposed on the surface of the second substrate <NUM> facing the camera body <NUM>, and it is necessary to arrange a thin film transistor and other structures on the surface of the second substrate <NUM> facing away from the camera body <NUM> through an evaporation process; therefore, the light-shielding layer <NUM> may be coated after the evaporation process and the bonding process of the first substrate <NUM> and the second substrate <NUM> are performed, or the light-shielding layer <NUM> may be coated before the evaporation process and the bonding process of the first substrate <NUM> and the second substrate <NUM> are performed. When the previous implementation manner is adopted, it is necessary to correspondingly add a protection measure for preventing the first substrate <NUM> and the second substrate <NUM> from being scratched.

Certainly, the light-shielding layer <NUM> may also be a printing structure. That is, the light-shielding layer <NUM> may be formed on the surface of the second substrate <NUM> facing the camera body <NUM> through a printing process, and this manner has the advantages of convenience in implementation and small thickness of the formed light-shielding layer <NUM>. Specifically, the light-shielding layer <NUM> may be printed after the evaporation process and the bonding process of the first substrate <NUM> and the second substrate <NUM> are performed, or the light-shielding layer <NUM> may be printed before the evaporation process and the bonding process of the first substrate <NUM> and the second substrate <NUM> are performed.

When the electronic device is assembled, the alignment and fixation between the light-shielding layer <NUM> and the camera body <NUM> can be realized through by means of accurately positioning a charge-coupled device (Charge-coupled Device, CCD) camera and driving the camera module <NUM> by a micromotor to dynamically adjust alignment, so that the relative position of the light-shielding layer <NUM> and the camera body <NUM> has higher precision, the imaging effect of the camera module <NUM> is ensured, it is unnecessary to consider the alignment error and increase the size of the first light-passing hole, and the screen-to-body ratio of the electronic device can be increased.

The electronic device disclosed in the embodiments of the present invention may be a smart phone, a tablet computer, an e-book reader, or a wearable device. Certainly, the electronic device may also be other devices, which is not limited in the embodiments of the present invention.

The embodiments of the present disclosure focus on describing differences between the embodiments, and different optimization features of the embodiments may be combined to form better embodiments provided that they are not contradictory. Considering brevity, details are not described herein again.

Claim 1:
An electronic device, comprising:
a display module (<NUM>), wherein the display module (<NUM>) comprises a first substrate (<NUM>), a second substrate (<NUM>) and a wiring structure (<NUM>), the first substrate (<NUM>) and the second substrate (<NUM>) are stacked, the wiring structure (<NUM>) is disposed on a surface of the second substrate (<NUM>) facing the first substrate (<NUM>), and the wiring structure (<NUM>) is provided with a first light-passing hole; and
a camera module (<NUM>), wherein the camera module (<NUM>) comprises a camera body (<NUM>) and a light-shielding layer (<NUM>), the camera body (<NUM>) is provided with a light-entrance hole (<NUM>), the second substrate (<NUM>) is located between the first substrate (<NUM>) and the camera body (<NUM>), characterized in that the light-shielding layer (<NUM>) is disposed on a surface of the second substrate (<NUM>) facing the camera body (<NUM>), the light-shielding layer (<NUM>) is provided with a second light-passing hole (<NUM>);
the first light-passing hole, the second light-passing hole (<NUM>) and the light-entrance hole (<NUM>) are arranged in an optical axis direction of the camera module (<NUM>), an orthographic projection of the second light-passing hole (<NUM>) on a plane perpendicular to the optical axis direction is within an orthographic projection of the light-entrance hole (<NUM>) on the plane perpendicular to the optical axis direction, and the orthographic projection of the second light-passing hole (<NUM>) on the plane perpendicular to the optical axis direction is within an orthographic projection of the first light-passing hole on the plane perpendicular to the optical axis direction.