Patent ID: 12220900

Reference signs are described as follows:100. light-transmitting cover;200. polarizer;210. optical clear glue;220. first through hole;300. glass component;310. upper glass;311. first recess;312. first recess bottom;313. first groove;320. lower glass;321. second recess;322. second groove;323. second recess bottom;330. foam;331. second through hole;340. frame adhesive;350. support column; and400. optical clear double-sided adhesive.

DETAILED DESCRIPTION

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 specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are merely some rather than all the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

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

Referring toFIG.1andFIG.2, an embodiment of the present invention discloses a hole-punch screen, which includes a light-transmitting cover100, a polarizer200, and a glass component300.

The light-transmitting cover100may be a clear part such as a glass cover, which mainly plays a protective role.

The polarizer200is attached to the light-transmitting cover100, the polarizer200is provided with a first through hole220, and the first through hole220is filled with optical clear glue210. The first through hole220can be fully filled with the optical clear glue210, without affecting passage of light. Before the polarizer200is attached to the light-transmitting cover100, the first through hole220is first filled with the optical clear glue210, which is in liquid form and has good fluidity so that the first through hole220can be fully filled and no bubbles is generated in the first through hole220when the optical clear glue210is solidified, thereby not affecting appearance and reliability testing. In addition, the optical clear glue210and the polarizer200can be bonded together, which prevents displacement and helps subsequent installation of other components.

The glass component300is attached to the polarizer200so that the polarizer200is located between the light-transmitting cover100and the glass component300. The glass component300is provided with a second through hole331at a position corresponding to the first through hole220. The second through hole331cooperates with the first through hole220to allow light to pass through.

The glass component300may include upper glass310, lower glass320, support columns350, and foam330.

The upper glass310is directly attached to the polarizer200, and the lower glass320is attached to the upper glass310via a frame adhesive340. The frame adhesive340is located between the upper glass310and the lower glass320, and the frame adhesive340is arranged in a ring along a circumferential direction of the upper glass310so that the frame adhesive340encloses an inner cavity between the upper glass310and the lower glass320. The lower glass320is located on a side of the upper glass310facing away from the polarizer200. In addition, a plurality of support columns350are also filled between the upper glass310and the lower glass320, the plurality of support columns350are spaced apart between the upper glass310and the lower glass320, and the plurality of support columns350are all located in the inner cavity. After the foam330is attached to the lower glass320, the lower glass320is located between the upper glass310and the foam330. The second through hole331is located in the foam330, and the second through hole331and the first through hole220are arranged coaxially.

It should be noted that in a region that is between the upper glass310and the lower glass320and that corresponds to the first through hole220, no support column350is provided, so as to avoid affecting the propagation of light.

In some implementations of this embodiment, the upper glass310may be provided with a first recess311.

After the upper glass310is attached to the polarizer200, because the upper glass310is in a suspended state at the first through hole220of the polarizer200, the upper glass310is prone to deformation at that position during use, and its main deformation is manifested as a depression there in a direction facing away from the polarizer200. In this case, a first groove313is formed on a side of the upper glass310facing the polarizer200, and a protrusion is formed on a side of the upper glass310facing the lower glass320. This depression has an effect that reflected light of incident light between the lower surface of the upper glass310and the upper surface of the lower glass320is likely to produce a thin film interference effect during use. This is mainly because of the spherical protrusion formed there by the upper glass310.

To improve this situation, the first recess311may be provided in the upper glass310, the first recess311is located on the side of the upper glass310facing toward the lower glass320, with a position of the first recess311corresponding to the position of the first through hole220. The provision of the first recess311in the upper glass310can change an angle of incident light passing through the upper glass310toward the lower glass320, thereby relieving the thin film interference effect.

Further, referring toFIG.4,FIG.4shows a state of the upper glass310with no depression. In some implementations of this embodiment, the first recess bottom312may alternatively be shaped into an arc surface, where the first recess bottom312is a recess bottom of the first recess311. The first recess bottom312is in an arc shape in a depressed direction of the first recess311, which means that an outer wall of the arc shape faces toward the first through hole220.

The provision of the first recess bottom312with an arc surface can further change, when the upper glass310is depressed, a shape of a surface of the upper glass310at the depression facing toward the lower glass320, thereby relieving the thin film interference effect.

In an optional implementation of this embodiment, before transforming the first recess bottom312into an arc surface, the shape of the first groove313formed by the depression of the upper glass310can be measured first, and then the first recess bottom312can be ground into the same shape as the first groove313. Referring toFIG.3(FIG.3shows a shape of the upper glass310with depression), when the first recess bottom312has the same shape as the first groove313, the depression of the upper glass310causes the first recess bottom312to deform and become substantially flat, which can better relieve the film interference effect.

In addition, referring toFIG.6,FIG.6shows a state of the lower glass320with no depression. A second recess321may also be provided in the lower glass320, the second recess321is located on a side of the lower glass320facing the upper glass310, and the second recess321is located at a position of the lower glass320corresponding to the second through hole331.

The lower glass320is located between the upper glass310and the foam330, and the foam330is provided with a second through hole331at a position corresponding to the first through hole220. The lower glass320is suspended at the second through hole331of the foam330. During use, the lower glass320is also prone to deformation at that position, and its main deformation is manifested as a depression there toward the upper glass310. In this case, a second groove322is formed on a side of the lower glass320facing away from the upper glass310, and a protrusion is formed on the side of the lower glass320facing the upper glass310, which is also likely to cause light reflected between the lower surface of the upper glass310and the upper surface of the lower glass320to produce a thin film interference effect. The provision of the second recess321can effectively improve the above situation, and when the second recess321cooperates with the first recess311, the thin film interference effect can be better relieved.

Further, in some implementations of this embodiment, the second recess bottom323may alternatively be shaped as an arc surface, where the second recess bottom323is a recess bottom of the second recess321. The second recess bottom323is in an arc shape in a direction from the lower glass320to the foam330, which means that an outer wall of the arc shape faces toward the second through hole331.

The provision of the second recess bottom323with an arc surface may further change, when the lower glass320is depressed, a shape of a surface of the lower glass320facing toward the upper glass310at the depression, thereby relieving the thin film interference effect.

The first recess311can be provided in a cylindrical shape, the second recess321can be provided in a spherical shape, the first recess311and the second recess321are coaxially arranged, and both the first recess311and the second recess321are coaxial with the first through hole220, so that four light-transmitting portions in the hole-punch screen, the first through hole220, the first recess311, the second recess321, and the second through hole331, are coaxially arranged, which facilitates passage of light.

In addition, a diameter of the first recess311may be equal to a diameter of the first through hole220, a diameter of the second recess321may be equal to a diameter of the second through hole331, and the diameter of the second through hole331is slightly smaller than the diameter of the first through hole220.

Because the first through hole220and the second through hole331may be different in size for different electronic devices, the first recess311and the second recess321can also be adjusted appropriately in size and depth for different electronic devices to achieve suitable results.

In an optional implementation of this embodiment, before transforming the second recess bottom323into an arc surface, the shape of the second groove322formed by the depression of the lower glass320can be measured first, and then the second recess bottom323can be ground into the same shape as the second groove322. Referring toFIG.5(FIG.5shows a shape of the lower glass320with depression), when the second recess bottom323has the same shape as the second groove322, the depression of the lower glass320causes the second recess bottom323to deform and become substantially flat, which can better relieve the film interference effect.

Because the first recess bottom312and the second recess bottom323are both flat when the upper glass310and the lower glass320are both depressed, the thin film interference effect can be substantially eliminated.

In some implementations of this embodiment, a contact area between the support columns350and the upper glass310is less than a contact area between the support columns350and the lower glass320. This is because incident light generally enters from the upper glass310toward the lower glass320, and therefore, reducing the contact area between the support columns350and the upper glass310can avoid formation of shadows.

Further, the support columns350may be arranged in a tapered shape, with a cross-sectional area of the support columns350gradually increasing in a direction of the upper glass310toward the lower glass320.

In some implementations of this embodiment, the polarizer200is attached to the light-transmitting cover100via an optical clear double-sided adhesive400. The attachment using the optical clear double-sided adhesive400has characteristics such as colorless and transparent, a light transmittance above 90%, good bonding strength, capable of being cured at room temperature or medium temperature, and small curing shrinkage. In this embodiment, the optical clear double-sided adhesive400may be an OCA optical adhesive. Certainly, the OCA optical adhesive is only an optional implementation of this embodiment. In other implementations, the polarizer200and the light-transmitting cover100may alternatively be attached by another optical clear double-sided adhesive400with a light transmittance of above 90%.

During assembly, the glass component300can be assembled first, and then the polarizer200and the upper glass310are attached together. The polarizer200and the glass component300, after being securely attached, can be placed on a flat surface so that the polarizer200is located uppermost, and then the first through hole220in the polarizer200is filled with optical clear glue. Because in this case the upper glass310is depressed to form a first groove313communicating with the first through hole220, when the optical clear glue is filled, a volume of the optical clear glue needs to be greater than a capacity of the first through hole220, so that the optical clear glue also fills up the first groove313, which can avoid a gap between the polarizer200and the upper glass310. Finally, the optical clear double-sided adhesive400is used to bond the light-transmitting cover100to the polarizer200to complete the assembly.

To avoid volume shrinkage of the optical clear glue after solidification, the light-transmitting cover can be attached to the polarizer200after the optical clear glue in the first through hole220is completely solidified and the upper surface of the solidified optical clear glue is flush with the upper surface of the polarizer200.

In some implementations of this embodiment, the optical clear glue can be solidified by UV light, and the optical clear double-sided adhesive400can also be used to bond the polarizer200and the upper glass310.

The first recess311and the second recess321can be made by a numerical control machine or by etching or another method.

A glass polishing process can be used for the upper glass310and the lower glass320, to polish the lower surface of the upper glass310and the upper surface of the lower glass320, so as to improve surface flatness of the upper glass310and the lower glass320and reduce a degree of depression of the upper glass310at the first through hole220and a degree of depression of the lower glass320at the second through hole331, thereby reducing interference with incident light.

An embodiment of the present invention further discloses an electronic device, which includes the foregoing hole-punch screen.

The electronic device provided in the present invention has the foregoing hole-punch screen. Because the first through hole220in the hole-punch screen is filled with the optical clear glue, no gap is created between the polarizer200and the glass component300as well as between the polarizer200and the light-transmitting cover100, thereby not affecting appearance and reliability testing, so that camera performance is optimized.

The electronic device in the embodiments of the present invention may be a smart phone, a tablet computer, an e-book reader, a game console, a smart watch, or the like. The embodiments of the present invention do not limit the specific type of the electronic device.

The foregoing embodiments of the present invention focus on the differences between the embodiments. As long as different features of improvement in the embodiments do not conflict, they can be combined to form more preferred embodiments. Further descriptions are omitted herein for the purpose of brevity.

The foregoing descriptions are only embodiments of the present invention, but the present invention is not limited to such embodiments. For a person skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the claims of the present invention.