CN112599023A

CN112599023A - Display device

Info

Publication number: CN112599023A
Application number: CN202110016517.XA
Authority: CN
Inventors: 黄海
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-04-02
Anticipated expiration: 2041-01-07
Also published as: CN112599023B

Abstract

The invention relates to a display device, when the display area of the display device is bent, each film layer of the display area can not shield lighting equipment in a light-transmitting hole even if dislocation offset occurs; reduced the projection area of light trap simultaneously, increased the display area of display area, promoted display device's screen accounts for the ratio, promotes the customer and experiences the sense, increases the compressive strength of light trap department, avoids appearing bad phenomena such as impression.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

The display device can convert the data of the computer into various characters, numbers, symbols or visual images for display, and can input commands or data into the computer by using input tools such as a keyboard, and the display contents can be added, deleted and changed at any time by means of hardware and software of the system. Display devices are classified into plasma, liquid crystal, light emitting diode, cathode ray tube, and the like, according to the display device used.

In the way of obtaining information, the display screen is the dominant position. The screen occupation ratio is an important index of the mobile phone screen, and the improvement of the screen occupation ratio can bring excellent visual experience and interaction effect to people. In order to realize the comprehensive screen effect and improve the screen ratio, the technology of the display screen is also leapfrog, and a bang screen, a water drop screen, a curved surface screen, a punching screen, a foldable screen and the like are correspondingly produced.

Among them, the combination of the perforated screen and the foldable screen is one of the main development trends of future display screens. In the folding process of the foldable display screen, dislocation deviation can occur in each film layer of the display screen, and further the position of the light hole corresponding to the front lighting equipment deviates. Because the lighting equipment is fixed on the frame body of the display device, the lighting equipment cannot deviate due to fixed position, and when each film layer of the display screen deviates by dislocation, the film layer of the display screen easily shields the lighting equipment to influence the phenomenon that external light enters the lighting equipment.

For avoiding each rete of display screen to take place dislocation skew and shelter from daylighting equipment, need leave certain clearance between the pore wall of daylighting equipment and light trap usually, can lead to the size increase of light trap from this to the effective display area who leads to the display screen reduces, leads to the screen of display screen to account for than reducing, and user experience effect is poor. Meanwhile, the light-transmitting hole is not supported, the compressive strength is low, and adverse phenomena such as marks are easy to occur.

Therefore, a new display device is needed to improve the screen ratio and the user experience.

Disclosure of Invention

The invention aims to provide a display device, which can solve the problem that lighting equipment is easily shielded by each film layer when the existing display screen is bent, and can also solve the problems that the screen occupation ratio is low, the user experience effect is poor and the like in the existing display screen.

In order to solve the above problems, the present invention provides a display device including a display area; the display area is provided with a folding line, and the display device is bendable at the folding line; the light hole penetrates through the display area; the lighting equipment is arranged in the light-transmitting hole or below the light-transmitting hole; the distance between the central axis of the lighting equipment and the folding line is greater than or less than the distance between the central axis of the light hole and the folding line.

Furthermore, if the display device can be bent inwards at the folding line, the distance between the central axis of the lighting equipment and the folding line is greater than the distance between the central axis of the light hole and the folding line.

Further, when the display device is unfolded, the distance between the central axis of the lighting device and the folding line is greater than the distance between the central axis of the light hole and the folding line.

Further, when the display device is bent inwards, the distance between the central axis of the lighting equipment and the folding line is smaller than the distance between the central axis of the light hole and the folding line.

Furthermore, if the display device can be bent outwards at the folding line, the distance between the central axis of the lighting equipment and the folding line is smaller than the distance between the central axis of the light hole and the folding line.

Further, when the display device is unfolded, the distance between the central axis of the lighting device and the folding line is smaller than the distance between the central axis of the light hole and the folding line.

Further, when the display device is bent outwards, the distance between the central axis of the lighting equipment and the folding line is greater than the distance between the central axis of the light hole and the folding line.

Further, wherein the display area includes: a support plate; the buffer layer is arranged on the support plate; the substrate is arranged on the surface of one side of the buffer layer, which is far away from the support plate; the light-emitting layer is arranged on the surface of one side of the substrate, which is far away from the buffer layer; the polarizing layer is arranged on the surface of one side of the light-emitting layer far away from the substrate; a plurality of shading units which are arranged on the surface of one side of the polarizing layer far away from the light-emitting layer at intervals; and the cover plate is arranged on the surface of one side of the shading unit far away from the polarizing layer.

Further, the shape of the light hole is one of a circle, an ellipse, a diamond and a rounded rectangle.

Further, when the shape of the light-transmitting hole is an ellipse, the major axis of the ellipse is perpendicular to the folding line.

The invention has the advantages that: the invention relates to a display device, when the display area of the display device is bent, each film layer of the display area can not shield lighting equipment in a light-transmitting hole even if dislocation offset occurs; simultaneously, reduced the projection area of light trap, increased the display area of display area, promote display device's screen and account for, promote the customer and experience the sense, increase the compressive strength of light trap department, avoid appearing bad phenomena such as impression.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic plan view of a display device of embodiment 1.

Fig. 2 is a sectional view a-a of the display device of fig. 1 when it is unfolded.

Fig. 3 is a cross-sectional view a-a of the first display region when the display device of fig. 1 is bent.

Fig. 4 is a schematic plan view of a display device according to embodiment 2.

Fig. 5 is a B-B sectional view of the display device of fig. 4 when unfolded.

Fig. 6 is a B-B sectional view of the first display region when the display device of fig. 4 is bent.

The components in the figure are identified as follows:

100. display device

101. Display area 102, light hole

103. Folding line

1011. First display area 1012 and second display area

1. Support plate 2, buffer layer

3. Substrate 4, light-emitting layer

5. Polarizing layer 6 and shading unit

7. Cover plate 8 and light-transmitting glass

9. Transparent optical cement 10 and lighting equipment

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to make and use the present invention in a complete manner, and is provided for illustration of the technical disclosure of the present invention so that the technical disclosure of the present invention will be more clearly understood and appreciated by those skilled in the art how to implement the present invention. The present invention may, however, be embodied in many different forms of embodiment, and the scope of the present invention should not be construed as limited to the embodiment set forth herein, but rather construed as being limited only by the following description of the embodiment.

The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are used for explaining and explaining the present invention, but not for limiting the scope of the present invention.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment provides a display device 100, which includes: a display area 101 and a light-transmitting hole 102. The light hole 102 penetrates the display area 101.

As shown in fig. 1, the display area 101 is provided with a folding line 103, and the folding line 103 divides the display area 101 into a first display area 1011 and a second display area 1012. The light-transmitting hole 102 is located in the first display area 1011.

The display device 100 is bendable at the fold line 103. The display area 101 comprises a display surface, i.e. the surface facing the customer luminous display. The display device 100 in this embodiment can be bent inward along the folding line 103, that is, when the display device 100 is folded along the folding line 103, an angle between the display surface of the first display area 1011 and the display surface of the second display area 1012 becomes smaller and smaller until the two display areas are attached to each other.

As shown in fig. 1, the light-transmitting hole 102 in this embodiment is disposed at a midpoint of an end of the first display area 1011 away from the folding line 103. In other embodiments, the light hole 102 may be disposed at any position of the display area 101.

As shown in fig. 2, the display area 101 includes: support plate 1, buffer layer 2, base plate 3, luminescent layer 4, polarizing layer 5, light shield 6 and cover 7.

As shown in fig. 2, wherein the support plate 1 may be stainless steel SUS, copper alloy, titanium alloy, or the like. The supporting plate 1 is mainly used to improve the mechanical characteristics of the display device 100.

As shown in fig. 2, the cushioning layer 2 may be arranged on the support plate 1 by gluing. In particular, a transparent optical glue 9 may be used. The material of the buffer layer 2 may be foam, which mainly buffers the stress applied to the display device 100.

As shown in fig. 2, a substrate 3 may be disposed on a surface of the buffer layer 2 away from the support plate 1 by gluing. In particular, a transparent optical glue 9 may be used. The substrate 3 can be a flexible substrate and has the function of blocking water and oxygen, and the substrate 3 can have better impact resistance and can effectively protect the display panel. The material of the substrate 3 is one or more of polyimide, polycarbonate, polyethylene terephthalate, and polyethylene naphthalate.

As shown in fig. 2, the light emitting layer 4 is disposed on a surface of the substrate 3 on a side away from the buffer layer 2. The light-emitting layer 4 is mainly used for light-emitting display of the display device 100. Specifically, the light emitting layer 4 includes an active layer, a gate insulating layer, a gate layer, a first insulating layer, a source drain layer, a second insulating layer, a pixel electrode layer, an electroluminescent layer, and a cathode layer, which are not described herein again.

As shown in fig. 2, a polarizing layer 5 is disposed on a surface of the light emitting layer 4 away from the substrate 3. The polarizing layer 5 mainly reflects the external ambient light, so that the external ambient light entering the light-emitting layer 4 is reduced, and the interference of the external ambient light on the light emitted by the light-emitting layer 4 is reduced.

As shown in fig. 2, a plurality of light shielding units 6 are disposed at intervals on a surface of the polarizing layer 5 on a side away from the light emitting layer. The light shielding unit 6 is mainly used to prevent interference between different colors of light emitted from the light emitting layer 4.

Wherein the shape of the light hole 102 is one of a circle, an ellipse, a diamond, and a rounded rectangle. The shape of the light shielding unit 6 is similar to that of the light transmission hole 102. That is, when the shape of the light transmission hole 102 is circular, the light shielding unit 6 corresponding to the shape of the light transmission hole 102 is also circular.

The light-transmitting hole 102 of the present embodiment is preferably shaped as an ellipse, and the major axis of the ellipse is perpendicular to the folding line 103. When the display device 100 is bent inward, the dislocation shift of each film layer of the display device in the direction perpendicular to the folding line 103 is large, and the dislocation shift in the direction parallel to the folding line 103 is small or even negligible. Therefore, the shape of the light hole 102 is set to be elliptical, the area of the light hole 102 can be reduced, the effective display area is increased, the screen occupation ratio is increased, and the customer experience is improved.

As shown in fig. 2, a cover plate 7 is disposed on a surface of the light shielding unit 6 on a side away from the polarizing layer 5. The cover plate 7 mainly protects the lower film layer, prevents abrasion, cracking and the like caused by external stress, and prolongs the service life of the display device 100.

As shown in fig. 2, in order to increase the mechanical performance of the display device 100, the present embodiment further provides a layer of light-transmissive glass 8 between the polarizing layer 5 and the light-shielding unit 6. Specifically, adopt sticky mode to be connected between printing opacity glass 8 and the polarisation layer 5, adopt sticky mode to be connected between printing opacity glass 8 and the shading unit 6, specifically can adopt transparent optical cement 9. Since the transparent glass 8 can allow external light to pass through without affecting the lighting of the lighting device 10, the transparent glass 8 in this embodiment is also disposed in the transparent hole 102. In other embodiments, the light-transmissive glass 8 may not be disposed in the light-transmissive hole 102.

As shown in fig. 2, the display device 100 further comprises a lighting arrangement 10. In this embodiment, the lighting device 10 is arranged below the light hole 102. In other embodiments, the daylighting apparatus 10 is also disposed within the light-transmissive aperture 102. The daylighting apparatus 10 comprises a camera or sensing device.

Since the display device 100 in this embodiment can be bent inward along the folding line 103, the film layers of the display device 100 are pressed and the film layers are moved to the right with respect to the lighting apparatus 10. Therefore, in this embodiment, the distance between the central axis of the lighting device 10 and the folding line 103 is greater than the distance between the central axis of the light-transmitting hole 102 and the folding line 103.

As shown in fig. 2, when the display device 100 is unfolded, the distance between the central axis of the lighting apparatus 10 and the folding line 103 is greater than the distance between the central axis of the light hole 102 and the folding line 103, so as to reduce the size of the light hole 102, increase the effective display area, increase the screen occupation ratio, improve the experience of customers, increase the compressive strength of the light hole 102, and avoid the occurrence of undesirable phenomena such as impressions.

As shown in fig. 3, when the display device 100 is bent inward, the distance between the central axis of the lighting apparatus 10 and the folding line 103 is smaller than the distance between the central axis of the light-transmitting hole 102 and the folding line 103, so as to ensure that after the display device 100 is bent inward, the lighting apparatus 10 is not shielded by the films of the display device 100, and the light absorption of the lighting apparatus 10 is not affected.

Example 2

As shown in fig. 4 and 5, the present embodiment provides a display device 100, which includes: a display area 101 and a light-transmitting hole 102. The light hole 102 penetrates the display area 101.

As shown in fig. 4, the display area 101 is provided with a folding line 103, and the folding line 103 divides the display area 101 into a first display area 1011 and a second display area 1012. The light-transmitting hole 102 is located in the first display area 1011.

The display device 100 is bendable at the fold line 103. The display area 101 comprises a display surface, i.e. the surface facing the customer luminous display. The display device 100 in this embodiment can be bent outward along the folding line 103, that is, when the display device 100 is folded along the folding line 103, an angle between the display surface of the first display area 1011 and the display surface of the second display area 1012 becomes larger and larger.

As shown in fig. 4, the light-transmitting hole 102 in this embodiment is disposed on the left side of the end of the first display area 1011 away from the folding line 103, and in other embodiments, the light-transmitting hole 102 may be disposed on the right side of the end of the first display area 1011 away from the folding line 103. In other embodiments, the light hole 102 may be disposed at any position of the display area 101.

As shown in fig. 5, the display area 101 includes: support plate 1, buffer layer 2, base plate 3, luminescent layer 4, polarizing layer 5, light shield 6 and cover 7.

As shown in fig. 5, wherein the support plate 1 may be stainless steel SUS, copper alloy, titanium alloy, or the like. The supporting plate 1 is mainly used to improve the mechanical characteristics of the display device 100.

As shown in fig. 5, the cushioning layer 2 may be arranged on the support plate 1 by gluing. In particular, a transparent optical glue 9 may be used. The material of the buffer layer 2 may be foam, which mainly buffers the stress applied to the display device 100, and then also serves as a concealing function to prevent external light from entering the light-emitting layer 4 through the substrate 3.

As shown in fig. 5, a substrate 3 may be disposed on a surface of the buffer layer 2 away from the support plate 1 by gluing. In particular, a transparent optical glue 9 may be used. The substrate 3 can be a flexible substrate and has the function of blocking water and oxygen, and the substrate 3 can have better impact resistance and can effectively protect the display panel. The material of the substrate 3 is one or more of polyimide, polycarbonate, polyethylene terephthalate, and polyethylene naphthalate.

As shown in fig. 5, the light emitting layer 4 is disposed on a surface of the substrate 3 on a side away from the buffer layer 2. The light-emitting layer 4 is mainly used for light-emitting display of the display device 100. Specifically, the light emitting layer 4 includes an active layer, a gate insulating layer, a gate layer, a first insulating layer, a source drain layer, a second insulating layer, a pixel electrode layer, an electroluminescent layer, and a cathode layer, which are not described herein again.

As shown in fig. 5, a polarizing layer 5 is disposed on a surface of the light emitting layer 4 away from the substrate 3. The polarizing layer 5 mainly reflects the external ambient light, so that the external ambient light entering the light-emitting layer 4 is reduced, and the interference of the external ambient light on the light emitted by the light-emitting layer 4 is reduced.

As shown in fig. 5, a plurality of light shielding units 6 are disposed at intervals on a surface of the polarizing layer 5 on a side away from the light emitting layer. The light shielding unit 6 is mainly used to prevent interference between different colors of light emitted from the light emitting layer 4.

As shown in fig. 5, a cover plate 7 is disposed on a surface of the light shielding unit 6 on a side away from the polarizing layer 5. The cover plate 7 mainly protects the lower film layer, prevents abrasion, cracking and the like caused by external stress, and prolongs the service life of the display device 100.

As shown in fig. 5, in order to increase the mechanical performance of the display device 100, the present embodiment further provides a layer of light-transmissive glass 8 between the polarizing layer 5 and the light-shielding unit 6. Specifically, adopt sticky mode to be connected between printing opacity glass 8 and the polarisation layer 5, adopt sticky mode to be connected between printing opacity glass 8 and the shading unit 6, specifically can adopt transparent optical cement 9. Since the transparent glass 8 can allow external light to pass through without affecting the lighting of the lighting device 10, the transparent glass 8 in this embodiment is also disposed in the transparent hole 102. In other embodiments, the light-transmissive glass 8 may not be disposed in the light-transmissive hole 102.

As shown in fig. 5, the display device 100 further comprises a lighting arrangement 10. In this embodiment, the lighting device 10 is arranged below the light hole 102. In other embodiments, the daylighting apparatus 10 is also disposed within the light-transmissive aperture 102. The daylighting apparatus 10 comprises a camera or sensing device.

Since the display device 100 in this embodiment can be bent outwards along the folding line 103, the film layers of the display device 100 are pressed and the film layers are moved to the left relative to the lighting apparatus 10. Therefore, in this embodiment, the distance between the central axis of the lighting device 10 and the folding line 103 is smaller than the distance between the central axis of the light-transmitting hole 102 and the folding line 103.

As shown in fig. 5, when the display device 100 is unfolded, the distance between the central axis of the lighting apparatus 10 and the folding line 103 is smaller than the distance between the central axis of the light hole 102 and the folding line 103, so as to achieve the technical effects of reducing the size of the light hole 102, increasing the effective display area, increasing the screen occupation ratio, improving the experience of customers, increasing the compressive strength of the light hole 102, and avoiding the occurrence of undesirable phenomena such as impressions.

As shown in fig. 6, when the display device 100 is bent outward, the distance between the central axis of the lighting apparatus 10 and the folding line 103 is greater than the distance between the central axis of the light-transmitting hole 102 and the folding line 103. This ensures that when the display device 100 is bent inward, the layers of the display device 100 do not obstruct the lighting apparatus 10 and do not affect the light absorption of the lighting apparatus 10.

The display device provided by the present application is described in detail above, and the principle and the implementation of the present application are explained by applying specific examples, and the description of the above examples is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display device, comprising a display area;

the display area is provided with a folding line, and the display device is bendable at the folding line;

the light hole penetrates through the display area; and

the lighting equipment is arranged in the light-transmitting hole or below the light-transmitting hole;

the distance between the central axis of the lighting equipment and the folding line is greater than or less than the distance between the central axis of the light hole and the folding line.

2. The display device of claim 1, wherein if the display device is capable of being bent inward at the folding line, the distance between the central axis of the lighting device and the folding line is greater than the distance between the central axis of the light hole and the folding line.

3. The display device of claim 2, wherein the central axis of the daylighting apparatus is spaced further from the fold line than the central axis of the light-transmitting hole when the display device is unfolded.

4. The display device of claim 3, wherein the central axis of the daylighting apparatus is spaced from the folding line by a distance less than the central axis of the light-transmitting hole when the display device is bent inward.

5. The display device of claim 1, wherein if the display device is capable of being bent outward at the folding line, the distance between the central axis of the lighting device and the folding line is smaller than the distance between the central axis of the light hole and the folding line.

6. The display device of claim 5, wherein the central axis of the daylighting apparatus is less than the central axis of the light-transmitting hole when the display device is unfolded.

7. The display device of claim 6, wherein the central axis of the daylighting apparatus is spaced further from the folding line than the central axis of the light-transmitting hole when the display device is bent outward.

8. The display device according to claim 1, wherein the display area comprises:

a support plate;

the buffer layer is arranged on the support plate;

the substrate is arranged on the surface of one side of the buffer layer, which is far away from the support plate;

the light-emitting layer is arranged on the surface of one side of the substrate, which is far away from the buffer layer;

the polarizing layer is arranged on the surface of one side of the light-emitting layer far away from the substrate;

a plurality of shading units which are arranged on the surface of one side of the polarizing layer far away from the light-emitting layer at intervals; and

and the cover plate is arranged on the surface of one side of the shading unit, which is far away from the polarizing layer.

9. The display device according to claim 8, wherein the shape of the light shielding unit is one of a circle, an ellipse, a diamond, and a rounded rectangle.

10. The display device according to claim 9, wherein the light shielding unit is an axisymmetric pattern including two or more axes of symmetry;

the length of each shading unit perpendicular to the symmetry axis of the folding line is larger than the length of each shading unit parallel to the symmetry axis of the folding line.