CN118430379A - Display module and display device - Google Patents

Abstract

The application relates to a display module and a display device. The display module comprises a display panel, wherein the display panel comprises a planar display part, a bending display part and a non-display part, the bending display part is connected with the planar display part and the non-display part, and at least part of the non-display part is arranged on one side of the backlight of the planar display part; on the reference plane, the junction of the bending display part and the bending non-display part is provided with a junction point, and the included angle between the junction point and the bending center of the bending display part and the reference straight line is larger than or equal to 45 degrees; the reference plane is a plane perpendicular to the bending center line of the bending display part and parallel to the thickness direction of the plane display part; on the reference plane, the reference straight line is a straight line passing through the center of the bending circle and parallel to the thickness direction of the flat display portion. The application not only can weaken the light leakage and the light reflection phenomena of the non-display part, and is beneficial to improving the display effect, but also can improve the screen occupation ratio.

Description

Display module and display device

Technical Field

The present application relates to the field of display technology, and in particular to a display module and a display device.

Background technique

With the continuous development of science and technology, people have higher and higher requirements for display devices. As we all know, organic light-emitting diode (OLED) display devices have attracted widespread attention due to their narrow frame, light weight, rollability, easy to carry and many other advantages. However, the current OLED display devices have light leakage, which has an adverse effect on the performance of OLED display devices.

Summary of the invention

Based on this, it is necessary to provide a display module and a display device that can improve the performance.

In a first aspect, an embodiment of the present application provides a display module, the display module comprising a display panel, the display panel comprising a flat display portion, a bent display portion, and a non-display portion, the bent display portion connects the flat display portion and the non-display portion, and at least a portion of the non-display portion is disposed on a backlight side of the flat display portion;

On the reference plane, the connection between the bent display portion and the non-display portion has a junction point, and the angle between the line between the junction point and the bending center of the bent display portion and the reference straight line is greater than or equal to 45°;

Among them, the reference plane is a plane perpendicular to the bending center line of the bending display part and parallel to the thickness direction of the planar display part; on the reference plane, the reference straight line is a straight line passing through the bending center and parallel to the thickness direction of the planar display part.

The display module provided by the embodiment of the present application is configured such that at least part of the non-display portion of the display panel is disposed on the backlight side of the flat display portion, and the angle between the line connecting the intersection point and the center of the bending circle and the reference straight line is greater than or equal to 45°. In this way, on the one hand, it is conducive to realizing the zero-frame display of the display module and can improve the screen-to-body ratio of the display module; on the other hand, bending the non-display portion on the backlight side of the display panel can reduce the light leakage and reflection of the non-display portion, which is conducive to improving the display effect; on the other hand, it can ensure the display effect of the side of the display module; on the other hand, compared with the traditional technology, the present application eliminates the ink, which is conducive to reducing the difficulty and cost of manufacturing the display module and the display device.

In one embodiment, the non-display portion includes a bent non-display portion and a flat non-display portion; the bent non-display portion connects the bent display portion and the flat non-display portion; the bending center of the bent display portion coincides with the bending center of the bent non-display portion, and the bending radius of the bent display portion is equal to the bending radius of the bent non-display portion;

The planar non-display portion is located on the backlight side of the planar display portion;

Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is less than 180°;

Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is less than or equal to 90°;

Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is equal to 90°.

In one embodiment, the planar display portion includes a first bending starting edge, a second bending starting edge and an arc angle edge, the first bending starting edge extends along a first direction, the second bending starting edge extends along a second direction intersecting the first direction, and the arc angle edge connects the first bending starting edge and the second bending starting edge;

The intersection point of the straight line where the first bending starting edge is located and the straight line where the second bending starting edge is located is located on the arc angle edge, or is located outside the arc angle edge.

In one embodiment, the radius _R1 of the arc angle edge satisfies the following relationship:

Wherein, a is the sum of the distance between one end of the planar non-display portion close to the bent non-display portion and one end away from the bent non-display portion, the arc length of the bent display portion and the arc length of the bent non-display portion;

Preferably, the distance between one end of the planar non-display portion close to the bent non-display portion and one end away from the bent non-display portion is greater than or equal to 1 mm;

Preferably, the sum of the distance between one end of the planar non-display portion close to the bent non-display portion and one end far from the bent non-display portion and the arc length of the bent non-display portion is a first value, and the difference between the first value and the bending radius of the bent display portion is greater than or equal to 0.8 mm;

Preferably, the radius of the arc angle edge is less than or equal to 15 mm.

In one of the embodiments, a bending radius of the bent display portion is less than or equal to 1.5 mm.

In one embodiment, in the thickness direction of the planar display portion, the intersection point has a first distance L ₁ from the light-emitting side surface of the planar display portion, and the first distance L ₁ satisfies the following relationship:

Wherein, _R2 is the bending radius of the bent display portion, H is the error parameter, 0.1mm≤H≤0.3mm.

In one embodiment, the display module further includes a cushion block, which is disposed on a backlight side of the planar display portion and between the planar display portion and the non-display portion;

And/or, the display module further comprises a first supporting layer, wherein the first supporting layer is arranged on a backlight side of the planar display portion to support the planar display portion;

And/or, the display module further includes a second supporting layer, and the second supporting layer is disposed on a side of the planar non-display portion close to the planar display portion to support the planar non-display portion.

In one of the embodiments, the display module further includes a cover plate, and the cover plate is arranged on a light emitting side of the display panel;

Wherein, a gap is formed between the cover plate and the bent display portion, and the gap is filled with an optical adhesive layer.

In a second aspect, another display module according to an embodiment of the present application includes a display panel, wherein the display panel includes a flat display portion, a bent display portion, and a non-display portion, wherein the bent display portion connects the flat display portion and the non-display portion, and at least a portion of the non-display portion is disposed on a backlight side of the flat display portion;

On a reference plane, the connection between the bent display portion and the non-display portion has a junction point; wherein the reference plane is a plane perpendicular to the bending center line of the bent display portion and parallel to the thickness direction of the planar display portion;

In the thickness direction of the planar display portion, the intersection point has a first distance L ₁ from the light-emitting side surface of the planar display portion, and the first distance L ₁ satisfies the following relationship:

Wherein, _R2 is the bending radius of the bent display portion, H is the error parameter, 0.1mm≤H≤0.3mm.

In one embodiment, the first distance L ₁ satisfies the following relationship: L ₁ ≥R ₂ +H.

In a third aspect, an embodiment of the present application provides a display device, comprising the display module in the embodiment of the first aspect.

In one embodiment, the display device further includes:

A frame body, comprising a bottom shell and a middle frame, wherein the middle frame is disposed around the peripheral edge of the bottom shell; and

The electronic component is arranged on the bottom shell; an escape space is formed between the electronic component and the middle frame; wherein the planar display portion of the display module is arranged on a side of the electronic component away from the bottom shell, and the bent display portion and non-display portion of the display module are arranged in the escape space.

The display device provided by the embodiment of the present application is provided by making at least part of the non-display part of the display panel be arranged on the backlight side of the flat display part, and making the angle between the line connecting the intersection point and the center of the bending circle and the reference straight line greater than or equal to 45°. In this way, on the one hand, it is conducive to realizing the zero-frame display of the display module, and can improve the screen-to-body ratio of the display device; on the other hand, bending the non-display part on the backlight side of the display panel can reduce the light leakage and reflection of the non-display part, which is conducive to improving the display effect; on the other hand, it can ensure the display effect of the side of the display module; on the other hand, compared with the traditional technology, the present application eliminates the ink, which is conducive to reducing the difficulty and cost of manufacturing the display module and the display device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG. 1 is a schematic diagram of a partial structure of a display module provided in one embodiment of the present application.

FIG. 2 is a schematic diagram of the display module shown in FIG. 1 before being bent.

FIG. 3 is a front view of the display module shown in FIG. 1 after being bent.

FIG. 4 is a schematic diagram showing the relationship between R ₁ and a in an embodiment of the present application.

FIG. 5 is a schematic diagram of the back side of the display module shown in FIG. 1 after being bent.

FIG. 6 is a schematic diagram of the structure of a display device provided in an embodiment of the present application.

FIG. 7 is a schematic diagram of a partial cross-sectional structure of the display device shown in FIG. 5 .

Description of reference numerals:

1. Display device; 10. Display module; 11. Display panel; 11a. Junction point; 111. Plane display portion; 111a. First bending starting edge; 111b. Second bending starting edge; 111c. Arc angle edge; 112. Bent display portion; 113. Non-display portion; 1131. Bent non-display portion; 1132. Plane non-display portion; 12. Pad; 131. First supporting layer; 132. Second supporting layer; 14. Cover plate; 15. Optical adhesive layer; 16. Circuit board; 17. Polarizer; 20. Frame; 21. Bottom shell; 22. Middle frame; 20a. Avoidance space; 30. Electronic components.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and/or" used herein includes any and all combinations of one or more of the related listed items.

With the advancement of technology and the improvement of consumer aesthetics, terminal display devices are increasingly requiring a high screen-to-body ratio. Increasing the screen-to-body ratio requires compressing the screen frame. Because the screen frame has metal traces, and the number of traces is proportional to the PPI, the higher the pixels, the more traces, and the larger the screen frame. Terminal devices (such as mobile phones) use cover ink to block the screen frame to prevent reflection and light leakage from the metal traces of the frame. The cover and the screen are fixed with OCA bonding. During bonding, due to material tolerance and equipment tolerance, the ink edge needs to be larger than the display edge, thereby increasing the module frame on the original basis.

However, on the one hand, in order to achieve a narrow bezel, the screen bezel needs to be compressed. If the screen bezel is compressed to ≤0.4mm, the ink cannot block light leakage due to the fitting tolerance between the cover and the screen and the ink processing tolerance, which adversely affects the performance of the terminal device. On the other hand, the screen and the middle frame are fixed with pressure-sensitive adhesive, and space for the pressure-sensitive adhesive needs to be left between the screen and the middle frame, which increases the bezel of the entire machine and is not conducive to achieving a high screen-to-body ratio.

In view of at least one of the above problems, the embodiments of the present application provide a display module and a display device, by making at least part of the non-display part of the display panel be arranged on the backlight side of the flat display part, and making the angle between the line connecting the intersection point and the center of the bending circle and the reference straight line greater than or equal to 45°. In this way, on the one hand, it is conducive to realizing the zero-frame display of the display module, and can improve the screen-to-body ratio of the display module and the display device; on the other hand, bending the non-display part on the backlight side of the display panel can reduce the light leakage and reflection of the non-display part, which is conducive to improving the display effect; on the other hand, it can ensure the display effect of the side of the display module; on the other hand, compared with the traditional technology, the present application eliminates the ink, which is conducive to reducing the difficulty and cost of manufacturing the display module and the display device.

In a first aspect, referring to FIGS. 1 , 2 , 3 , 4 and 5 , an embodiment of the present application provides a display module 10, which may be an organic light emitting diode display module (Organic Light Emitting Diode, OLED for short), a quantum dot electroluminescent display module (Quantum Dot Light Emitting Diode, QLED for short), etc.

Specifically, the display module 10 includes a display panel 11, which includes a planar display portion 111, a bent display portion 112 and a non-display portion 113. The bent display portion 112 connects the planar display portion 111 and the non-display portion 113, and at least a portion of the non-display portion 113 is arranged on the backlight side of the planar display portion 111.

A plane perpendicular to the bending center line of the bending display portion 112 and parallel to the thickness direction of the planar display portion 111 is defined as a reference plane. Taking FIG1 as an example, on the plane where the paper is located, after the bending display portion 112 is bent, the center of the bending display portion 112 is the bending center c. The center line perpendicular to the paper and passing through the bending center c is the bending center line, so the reference plane here is the plane where the paper is located. On the reference plane, a straight line passing through the bending center c of the bending display portion 112 and parallel to the thickness direction of the planar display portion 111 is defined as a reference straight line b.

Among them, on the reference plane, the connection between the bent display portion 112 and the non-display portion 113 has a junction point 11a. The angle between the line between the junction point 11a and the bending circle center c and the reference straight line b is α, and the angle α is greater than or equal to 45°. The bending radius of the bent display portion 112 is the distance between the bending circle center c and the junction point 11a. Specifically, the angle α can be 50°, 65°, 75° or 80°, etc.

In one example, the bent display portion 112 is a curved display portion.

It should be noted that the display panel 11 includes a flat display portion 111, a bent display portion 112 and a non-display portion 113, and at least part of the non-display portion 113 is disposed on the backlight side of the flat display portion 111. This is equivalent to bending the non-display portion 113 (same as the screen frame in the previous text) of the display panel 11 to the back of the display panel 11. In this way, on the one hand, it is conducive to realizing the zero-frame display of the display module 10, and can improve the screen-to-body ratio of the display module 10; on the other hand, bending the non-display portion 113 to the backlight side of the display panel 11 can reduce the light leakage and reflection of the non-display portion 113, which is conducive to improving the display effect. By making the angle between the connecting line between the intersection point 11a and the bending center c and the reference straight line b greater than or equal to 45°, on the one hand, it can ensure that the non-display portion 113 is bent to the back of the display panel 11, and on the other hand, the inventor has found through optical experiments that at the above angle, it can ensure that the front of the display module 10 can achieve full display after bending.

In addition, compared to conventional technologies, the display module 10 provided in the embodiment of the present application has the non-display portion 113 bent to the back of the display panel 11, so that light reflection or light leakage of the non-display portion 113 will not be emitted from the front side (or light emitting side) of the display panel 11. Therefore, ink can be eliminated, which is beneficial to reducing the difficulty and cost of manufacturing the display module 10.

It should be noted that the entire structure of the non-display portion 113 can be a planar structure, that is, only the bent display portion 112 is bent in the display panel 11. It should be noted that in this embodiment, the angle α between the line between the intersection point 11a and the bending center c and the reference straight line b is greater than or equal to 180°.

In one embodiment, the non-display portion 113 includes a bent non-display portion 1131 and a flat non-display portion 1132. The bent non-display portion 1131 connects the bent display portion 112 and the flat non-display portion 1132. That is, the junction point 11a is located at the connection between the bent display portion 112 and the bent non-display portion 1131. The bending center of the bent display portion 112 coincides with the bending center of the bent non-display portion 1131, and the bending radius of the bent display portion 112 is equal to the bending radius of the bent non-display portion 1131. In the embodiment of the present application, the bending radius of the bent display portion 112 and the bending radius of the bent non-display portion 1131 are both R _2. The flat non-display portion 1132 is located on the backlight side of the flat display portion 111.

In this way, it is equivalent to making the bent display portion 112 and the bent non-display portion 1131 together constitute the bent portion of the display panel 11, which can avoid making the bending angle of the bent display portion 112 (that is, the arc angle of the bent display portion 112) too large, thereby causing a part of the display area of the bent display portion 112 to be lost (that is, when the display module 10 is working, the light emitted by a part of the display area cannot be received by the user under a normal viewing angle), which is beneficial to improving the utilization rate of the display area of the display panel 11 and reducing the manufacturing cost of the display module 10.

In one embodiment, the angle α between the line connecting the intersection point 11a and the bending center c and the reference straight line b is less than 180°. Specifically, the angle α can also be 91°, 93° or 93°, etc. In this way, a part of the non-display portion 113 will also be bent, that is, the non-display portion 113 includes a bent non-display portion 1131 and a flat non-display portion 1132. In this way, it is possible to avoid making the bending angle of the bent display portion 112 (that is, the arc angle of the bent display portion 112) too large, thereby causing a part of the display area of the bent display portion 112 to be lost (that is, when the display module 10 is working, the light emitted by a part of the display area cannot be received by the user at a normal viewing angle), which is beneficial to improving the utilization rate of the display area of the display panel 11 and reducing the manufacturing cost of the display module 10.

Furthermore, the angle α between the line connecting the intersection point 11a and the bending circle center c and the reference straight line b is less than or equal to 90°. Specifically, the angle α may be 60°, 70° or 85°.

In a preferred embodiment, the angle α between the line connecting the intersection point 11a and the bending circle center c and the reference straight line b is equal to 90°. In this embodiment, "angle α is equal to 90°" may mean that angle α is completely equal to 90°, or that angle α is slightly greater than or slightly less than 90°.

In this way, on the one hand, the flat non-display part 1132 is bent to the back of the flat display part 111, and the bent non-display part 1131 is bent to the back of the bent display part 112. When viewed from the light-emitting side (front) of the display panel 11, the reflection and leakage of the flat non-display part 1132 can be completely blocked by the flat display part 111, and the reflection and leakage of the bent non-display part 1131 can be completely blocked by the bent display part 112, thereby minimizing the impact of light leakage and reflection on the display effect. On the other hand, a completely zero-frame display can be achieved, which can maximize the screen-to-body ratio of the display module 10; on the other hand, the side of the display module 10 can achieve a better display effect; on the other hand, the utilization rate of the display area of the display panel 11 can be higher.

Here, it should be particularly noted that all edges of the plane display portion 111 may be provided with a bent display portion 112, or only some edges may be provided with a bent display portion 112. Specifically, taking the rectangular display module 10 as an example, the plane display portion 111 of the display panel 11 has a first edge and a second edge arranged relatively along a first direction, a third edge and a fourth edge arranged relatively along a second direction, and the first direction and the second direction are perpendicular. In one example, only the first edge is connected to the bent display portion 112, which is equivalent to bending only one side of the display panel 11. In another example, both the first edge and the second edge are connected to the bent display portion 112, which is equivalent to bending only two sides of the display panel 11. In yet another example, the first edge, the second edge, the third edge and the fourth edge are all connected to the bent display portion 112, which is equivalent to bending all four sides of the display panel 11.

In one embodiment, as shown in FIGS. 2 and 3 , the plane display portion 111 includes a first bending start edge 111a, a second bending start edge 111b, and an arc angle edge 111c, wherein the first bending start edge 111a extends along a first direction X, the second bending start edge 111b extends along a second direction Y intersecting the first direction X, and the arc angle edge 111c connects the first bending start edge 111a and the second bending start edge 111b. The intersection d of the straight line e where the first bending start edge 111a is located and the straight line f where the second bending start edge 111b is located is located on the arc angle edge 111c, or is located outside the arc angle edge 111c.

In this way, the wrinkle phenomenon at the corners of the display panel 11 after being bent can be improved, thereby minimizing the bending stress concentration and increasing the service life of the display module 10 .

It can be understood that the display panel 11 can have two first bending starting edges 111a, two second bending starting edges 111b and four arc corner edges 111c, the two first bending starting edges 111a are located on both sides of the plane display part 111 along the second direction Y, and the two second bending starting edges 111b are located on both sides of the plane display part 111 along the first direction X.

In one embodiment, the radius _R1 of the arc angle edge 111c satisfies the following relationship:

Wherein, a is the sum of the distance between the end of the planar non-display portion 1132 close to the bent non-display portion 1131 and the end of the planar non-display portion 1132 away from the bent non-display portion 1131, the arc length of the bent display portion 112, and the arc length of the bent non-display portion 1131. Referring to the schematic diagram of the display module 10 before bending shown in FIG. 2, a is also the distance between the edge of the display panel 11 and the bending start edge (the first bending start edge 111a or the second bending start edge 111b). In one example, a is 2 mm and _R1 is 7 mm. In another example, a is 3 mm and _R1 is 11 mm.

By making _R1 and a satisfy the above relationship, the corners of the display module 10 can be designed with a large R angle, which can improve the wrinkle phenomenon at the corners of the display panel 11 after bending, thereby minimizing the bending stress concentration and improving the service life of the display module 10.

It should be noted that, referring to FIG4 , and based on the trigonometric function relationship, the above relationship can be derived from a+R ₁ cos(π/4)=R _1. The embodiment of the present application will not be described in detail here.

In one embodiment, the display module 10 further includes a circuit board 16, and the circuit board 16 is connected to a side edge of the display panel 11. Exemplarily, the circuit board 16 may be a flexible printed circuit (FPC).

In one embodiment, the radius _R1 of the arc-angle edge 111 c is less than or equal to 15 mm. In this way, the radius of the arc-angle edge 111 c can be prevented from being too large, and the binding width between the circuit board 16 and the display panel 11 can be ensured.

In one embodiment, the bending radius _R2 of the bent display portion 112 is less than or equal to 1.5 mm. In this way, on the one hand, it is conducive to realizing a large R angle design for the corners of the display module 10; on the other hand, it is conducive to realizing zero-frame display of the display module 10, which can improve the screen-to-body ratio of the display module 10; on the other hand, it can reduce the light leakage and reflection phenomenon of the non-display portion 113, which is conducive to improving the display effect.

In one embodiment, in the thickness direction of the planar display portion 111 , the intersection point 11 a and the light-emitting side surface of the planar display portion 111 have a first distance L ₁ , and the first distance L ₁ satisfies the following relationship:

Wherein, _R2 is the bending radius of the bent display portion 112, H is the error parameter, 0.1mm≤H≤0.3mm. Here, the first distance _L1 is equivalent to the bending depth of the display portion. The error parameter H can be a bending error. In one example, H, _L1 and _R2 can be 0.3mm, 0.8mm, and 1mm, respectively. In another example, H, _L1 and _R2 can be 0.1mm, 0.85mm, and 1.5mm, respectively.

Furthermore, the first distance _L1 may also satisfy the following relationship: _{L1 ≥R2} +H; wherein the error parameter H may also take values such as 0.15 mm, 0.2 mm, etc.

By making L ₁ , R ₂ and H satisfy the above relationship, on the one hand, the screen ratio of the display module 10 can be improved, so that the front of the display module 10 can be fully displayed. On the other hand, the side of the display module 10 can also have a better display effect.

In one embodiment, the display module 10 further includes a cushion block 12, which is disposed on the backlight side of the flat display portion 111 and between the flat display portion 111 and the non-display portion 113. By providing the cushion block 12, the non-display portion 113 can be supported and fixed, thereby improving the structural stability of the display module 10.

In one embodiment, the material of the pad 12 includes silica gel. Thus, the pad 12 can not only play a role of fixing and buffering, but also improve the indentation.

In one embodiment, the material of the cushion block 12 includes colloid, and the viscosity of the colloid is ≥ 1200 gf/inch. In this way, the cushion block 12 can have better adhesive properties, thereby providing better support and fixation for the non-display portion 113 .

In one embodiment, the sum of the distance between one end of the planar non-display portion 1132 close to the bent non-display portion 1131 and one end of the planar non-display portion 1132 away from the bent non-display portion 1131 and the arc length of the bent non-display portion 1131 is a first value, and the difference between the first value and the bending radius of the bent display portion 112 is greater than or equal to 0.8 mm. That is, _L2 in FIG1 is greater than or equal to 0.8 mm, that is, the first value ≥ _R2 +0.8. Exemplarily, _L2 can be 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or 2 mm. The first value can be 1.8 mm, 2.3 mm, 3 mm, etc.

It can be understood that the pad 12 is bonded to the planar non-display portion 1132 . The above arrangement can ensure that the bonding area between the pad 12 and the planar non-display portion 1132 is sufficient, thereby achieving a better bonding effect and further providing better support and fixation for the non-display portion 113 .

In one embodiment, the distance between the end of the planar non-display portion 1132 close to the bent non-display portion 1131 and the end away from the bent non-display portion 1131 is greater than or equal to 1 mm. That is, the width of the planar non-display portion 1132 is ≥ 1 mm. In FIG. 2 , the width of the planar non-display portion 1132 is L ₂ .

It can be understood that the pad 12 is bonded to the planar non-display portion 1132 . The above arrangement can ensure that the bonding area between the pad 12 and the planar non-display portion 1132 is sufficient, thereby achieving a better bonding effect and further providing better support and fixation for the non-display portion 113 .

In one embodiment, as shown in FIG. 1 , the display module 10 further includes a first supporting layer 131, which is disposed on the backlight side of the flat display portion 111 to support the flat display portion 111. In one example, the orthographic projection of the first supporting layer 131 on the display panel 11 coincides with the flat display portion 111. This is beneficial to improving the structural strength of the flat display portion 111.

In one embodiment, as shown in Fig. 1 , the edge of the end of the first supporting layer 131 close to the bent display portion 112 coincides with the reference straight line b. This helps to reduce the bending difficulty and bending stress.

In one embodiment, the display module 10 further includes a second supporting layer 132, which is disposed on a side of the planar non-display portion 1132 close to the planar display portion 111 to support the planar non-display portion 1132. This helps to improve the structural strength of the planar non-display portion 1132.

In one embodiment, the end edge of the second supporting layer 132 close to the bending display portion 112 coincides with the reference straight line b. In this way, it is equivalent to not providing a supporting layer on the back of the bending display portion 112, which is beneficial to reducing the bending radius and the bending difficulty; on the other hand, it is beneficial to reduce the bending stress.

In one embodiment, the display module 10 further includes a cover plate 14, which is disposed on the light-emitting side of the display panel 11. A gap is formed between the cover plate 14 and the bent display portion 112, and the gap is filled with an optical adhesive layer 15.

In this way, it is possible to avoid the presence of air in the gap between the curved surface of the display panel 11 and the cover plate 14 , thereby preventing the problem of different display colors caused by different refractive indices.

In one embodiment, the display module 10 further includes a polarizer 17 , which is disposed between the display panel 11 and the cover plate 14 .

In the second aspect, referring to FIGS. 1 to 5 , a display module 10 in another embodiment includes a display panel 11, the display panel 11 includes a flat display portion 111, a bent display portion 112, and a non-display portion 113, the bent display portion 112 connects the flat display portion 111 and the non-display portion 113, and at least a portion of the non-display portion 113 is disposed on a backlight side of the flat display portion 111;

On the reference plane, the connection between the bent display portion 112 and the non-display portion 113 has an intersection point 11a; wherein the reference plane is a plane perpendicular to the bending center line of the bent display portion 112 and parallel to the thickness direction of the planar display portion 111; the center line perpendicular to the paper surface and passing through the bending center c is the bending center line, therefore, the reference plane here is the plane where the paper surface is located.

In the thickness direction of the planar display portion 111, the intersection point 11a and the light-emitting side surface of the planar display portion 111 have a first distance _L1 , and the first distance _L1 satisfies the following relationship:

Wherein, _R2 is the bending radius of the bent display portion 112, H is an error parameter, and 0.1 mm ≤ H ≤ 0.3 mm.

Here, the first distance _L1 is equivalent to the bending depth of the display portion. The error parameter H can be a bending error. In one example, H, _L1 and _R2 can be 0.3 mm, 0.8 mm, and 1 mm, respectively. In another example, H, _L1 and _R2 can be 0.1 mm, 0.85 mm, and 1.5 mm, respectively.

Preferably, the first distance _L1 satisfies the following relationship: _L1 ≥ _R2 + H. The error parameter H may also take values such as 0.15 mm, 0.2 mm, etc.

In the embodiment of the present application, by making L ₁ , R ₂ and H satisfy the above relationship, the screen-to-body ratio of the display module 10 can be increased, thereby ensuring that the front side of the display module 10 realizes full display.

In this embodiment, other structural and parameter features, such as the line between the intersection point 11a and the bending center c, the limitation of the angle α between the line and the reference straight line b, the parameter limitation satisfied by the radius _R1 of the arc angle edge, the parameter limitation of _L2 , and the design of the first supporting layer 131 and/or the second supporting layer 132, are the same as those in the other embodiments above. For details, please refer to the above-mentioned related content and will not be described in detail here.

In a third aspect, as shown in FIG. 6 and FIG. 7 , an embodiment of the present application provides a display device 1 , which includes the display module 10 in the embodiment of the first aspect.

The display device 1 can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver/navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a TV monitor, a flat-panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and/or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

The display device 1 provided in the embodiment of the present application is configured such that at least part of the non-display portion 113 of the display panel 11 is disposed on the backlight side of the flat display portion 111, and the angle between the line connecting the intersection point 11a and the bending center c and the reference straight line b is greater than or equal to 45°. In this way, on the one hand, it is conducive to realizing the zero-frame display of the display device 1, and can improve the screen-to-body ratio of the display device 1; on the other hand, bending the non-display portion 113 on the backlight side of the display panel 11 can reduce the light leakage and reflection of the non-display portion 113, which is conducive to improving the display effect; on the other hand, it can ensure the display effect of the side of the display module 10; on the other hand, compared with the traditional technology, the present application eliminates the ink, which is conducive to reducing the manufacturing difficulty and manufacturing cost of the display device 1.

In one embodiment, the display device 1 further includes a frame 20 and an electronic component 30. The frame 20 includes a bottom shell 21 and a middle frame 22, and the middle frame 22 is arranged around the peripheral edge of the bottom shell 21. The electronic component 30 is arranged on the bottom shell 21, and an escape space 20a is formed between the electronic component 30 and the middle frame 22. Among them, the flat display part 111 of the display module 10 is arranged on the side of the electronic component 30 away from the bottom shell 21, and the bent display part 112 and the non-display part 113 of the display module 10 are arranged in the escape space 20a. Exemplarily, the electronic component 30 can be a battery.

In this way, by providing the avoidance space 20 a on the middle frame 22 , the zero-frame display of the display module 10 can be achieved while the thickness of the entire device remains unchanged.

In a specific embodiment, the cushion block 12 of the display module 10 is also arranged in the avoidance space 20a. Furthermore, the planar non-display portion 1132 is bonded to the bottom shell 21. It should be noted that the cover plate 14 of the display module 10 may not be connected to the frame 20, that is, only the planar non-display portion 1132 needs to be bonded to the bottom shell 21 to achieve the connection between the display module 10 and the frame 20. In this way, compared with the conventional method of bonding the cover plate 14 to the frame 20, when assembling the display module 10 and the frame 20, the embodiment of the present application does not need to precisely align the cover plate 14 and the frame 20. It is only necessary to place the bent portion of the display module 10 in the avoidance space 20a and bond the planar non-display portion 1132 to the bottom shell 21. In summary, the embodiment of the present application is conducive to reducing the difficulty of assembling the display device 1.

In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims (10)

1. A display module, characterized in that it comprises a display panel, wherein the display panel comprises a flat display portion, a bent display portion and a non-display portion, wherein the bent display portion connects the flat display portion and the non-display portion, and at least a portion of the non-display portion is disposed on a backlight side of the flat display portion; On the reference plane, the connection between the bent display portion and the non-display portion has a junction point, and the angle between the line between the junction point and the bending center of the bent display portion and the reference straight line is greater than or equal to 45°; Among them, the reference plane is a plane perpendicular to the bending center line of the bending display part and parallel to the thickness direction of the planar display part; on the reference plane, the reference straight line is a straight line passing through the bending center and parallel to the thickness direction of the planar display part. 2. The display module according to claim 1, characterized in that the non-display portion comprises a bent non-display portion and a flat non-display portion; the bent non-display portion connects the bent display portion and the flat non-display portion; the bending center of the bent display portion coincides with the bending center of the bent non-display portion, and the bending radius of the bent display portion is equal to the bending radius of the bent non-display portion; The planar non-display portion is located on the backlight side of the planar display portion; Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is less than 180°; Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is less than or equal to 90°; Preferably, the angle between the line between the intersection point and the center of the bending circle and the reference straight line is equal to 90°. 3. The display module according to claim 2, characterized in that the planar display portion comprises a first bending starting edge, a second bending starting edge and an arc angle edge, the first bending starting edge extends along a first direction, the second bending starting edge extends along a second direction intersecting the first direction, and the arc angle edge connects the first bending starting edge and the second bending starting edge; The intersection point of the straight line where the first bending starting edge is located and the straight line where the second bending starting edge is located is located on the arc angle edge, or is located outside the arc angle edge. 4. The display module according to claim 3, wherein the radius _R1 of the arc angle edge satisfies the following relationship: Wherein, a is the sum of the distance between one end of the planar non-display portion close to the bent non-display portion and one end away from the bent non-display portion, the arc length of the bent display portion and the arc length of the bent non-display portion; Preferably, the distance between one end of the planar non-display portion close to the bent non-display portion and one end away from the bent non-display portion is greater than or equal to 1 mm; Preferably, the sum of the distance between one end of the planar non-display portion close to the bent non-display portion and one end far from the bent non-display portion and the arc length of the bent non-display portion is a first value, and the difference between the first value and the bending radius of the bent display portion is greater than or equal to 0.8 mm; Preferably, the radius of the arc angle edge is less than or equal to 15 mm. 5 . The display module according to claim 1 , wherein a bending radius of the bent display portion is less than or equal to 1.5 mm. 6. The display module according to any one of claims 1 to 4, characterized in that, in the thickness direction of the planar display portion, the intersection point and the light-emitting side surface of the planar display portion have a first distance _L1 , and the first distance _L1 satisfies the following relationship: Wherein, _R2 is the bending radius of the bent display portion, H is the error parameter, 0.1mm≤H≤0.3mm. 7. The display module according to claim 2, characterized in that the display module further comprises a cushion block, wherein the cushion block is arranged on a backlight side of the planar display portion and between the planar display portion and the non-display portion; And/or, the display module further comprises a first supporting layer, wherein the first supporting layer is arranged on a backlight side of the planar display portion to support the planar display portion; And/or, the display module further includes a second supporting layer, and the second supporting layer is disposed on a side of the planar non-display portion close to the planar display portion to support the planar non-display portion. 8. The display module according to any one of claims 1 to 4, characterized in that the display module further comprises a cover plate, wherein the cover plate is arranged on a light emitting side of the display panel; Wherein, a gap is formed between the cover plate and the bent display portion, and the gap is filled with an optical adhesive layer. 9. A display module, characterized in that it comprises a display panel, wherein the display panel comprises a flat display portion, a bent display portion and a non-display portion, wherein the bent display portion connects the flat display portion and the non-display portion, and at least a portion of the non-display portion is disposed on a backlight side of the flat display portion; On a reference plane, the connection between the bent display portion and the non-display portion has a junction point; wherein the reference plane is a plane perpendicular to the bending center line of the bent display portion and parallel to the thickness direction of the planar display portion; In the thickness direction of the planar display portion, the intersection point has a first distance L ₁ from the light-emitting side surface of the planar display portion, and the first distance L ₁ satisfies the following relationship: Wherein, _R2 is the bending radius of the bent display portion, H is the error parameter, 0.1mm≤H≤0.3mm; Preferably, the first distance L ₁ satisfies the following relationship: L ₁ ≥R ₂ +H. 10. A display device, comprising the display module according to any one of claims 1 to 9; Preferably, the display device further includes: A frame body, comprising a bottom shell and a middle frame, wherein the middle frame is disposed around the peripheral edge of the bottom shell; and The electronic component is arranged on the bottom shell; an escape space is formed between the electronic component and the middle frame; wherein the planar display portion of the display module is arranged on a side of the electronic component away from the bottom shell, and the bent display portion and non-display portion of the display module are arranged in the escape space.