WO2018223698A1

WO2018223698A1 - Liquid crystal display module, and curvature radius adjustment method

Info

Publication number: WO2018223698A1
Application number: PCT/CN2018/071829
Authority: WO
Inventors: 杜景军; 陈秀云; 盖欣; 尹大根
Original assignee: 京东方科技集团股份有限公司; 北京京东方光电科技有限公司
Priority date: 2017-06-06
Filing date: 2018-01-09
Publication date: 2018-12-13
Also published as: CN107065271A

Abstract

Disclosed are a liquid crystal display module, and a curvature radius adjustment method. The liquid crystal display module comprises a display panel (10), a light guide plate (20) arranged at the back face of the display panel (10), and a curvature radius adjustment apparatus (30) arranged at the front face of the display panel (10) and in contact with the display panel (10). The curvature radius adjustment apparatus (30) is used for receiving the curvature radius specified by a user; calculating and obtaining a movement displacement value according to pre-set position information and the curvature radius; and pushing the display panel (10) to move towards the light guide plate (20) by the movement displacement value, such that the curvature radius of the display panel (10) is equal to the curvature radius specified by the user.

Description

Liquid crystal display module and radius of curvature adjustment method

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei.

Technical field

The present disclosure relates to a liquid crystal display module and a method of adjusting a radius of curvature.

Background technique

With the universal application of liquid crystal display, the design of liquid crystal display module has become the mainstream in the market. In the current liquid crystal display industry, the liquid crystal display module includes a liquid crystal display panel, wherein the liquid crystal display panel of the liquid crystal display module is in a planar state. The installation is performed below, and the radius of curvature of the liquid crystal display panel cannot be adjusted.

Summary of the invention

The present disclosure provides a liquid crystal display module comprising: a display panel, a light guide plate disposed on a back surface of the display panel, and a curvature radius adjusting device disposed on the front surface of the display panel and in contact with the display panel. The radius of curvature adjusting device is configured to receive a radius of curvature specified by the user; calculate a moving displacement value according to the preset position information and the radius of curvature; and push the display panel to move the moving displacement value toward the light guide plate, The radius of curvature of the display panel is made equal to the radius of curvature specified by the user.

Further, the preset position information is a distance between a center line of the projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel is not bent.

Further, the radius of curvature adjusting device comprises: a receiving module, a driving module and a processing module. The receiving module is configured to receive a radius of curvature specified by a user;

The driving module is configured to push the display panel to move the movement displacement value toward the light guide plate;

The processing module according to a radius of curvature, using the equation _{Δx 0 = R (1-cos} (L / 2R)), the calculated value of the maximum displacement movement Δx _0; The position information and the preset Δx _0, using formula

Calculating the movement displacement value Δx; and also for controlling the movement of the driving module; wherein R is a radius of curvature, L is a length of the display panel, and x is preset position information.

Further, the driving module is an adjusting screw.

Further, the processing module is further configured to determine whether the maximum movement displacement value is within a preset range, and if the maximum movement displacement value is within a preset range, controlling the driving module to move.

Further, the preset range is [0, Δx _max ], wherein Δx _max is a maximum movement displacement value that ensures that the display panel function does not fail.

Further, a buffer device is further included; the buffer device is disposed between the curvature radius adjusting device and the display panel.

Further, the number of the curvature radius adjusting devices is plural.

Further, the buffer device has a plurality of buffers corresponding to the curvature radius adjusting device; or the buffer device covers the display panel.

Further, the cushioning device material is foam or plastic.

Further, a plastic plastic frame and a metal frame are also included. The display panel is embedded in the plastic plastic frame, and the metal frame is disposed on the outer side of the plastic plastic frame.

In addition, the present disclosure further provides a method for adjusting a radius of curvature, which is implemented by using a liquid crystal display module, comprising: receiving a radius of curvature specified by a user; and calculating a moving displacement value according to the preset position information and the radius of curvature; wherein The preset position information is a distance between a center line of the projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel is not bent; and pushing the display panel toward the light guide plate The movement displacement value is such that the radius of curvature of the display panel is equal to a radius of curvature specified by the user.

Further, the calculating the movement displacement value according to the preset position information and the radius of curvature comprises: calculating a maximum movement displacement according to the radius of curvature by using a formula Δx ₀ = R(1-cos(L/2R)) a value Δx ₀ ; using a formula according to preset position information and the Δx ₀

Calculating a movement displacement value Δx; wherein R is the radius of curvature, L is the length of the display panel, and x is the preset position information.

Further, after the calculating the maximum movement displacement value Δx ₀ , the method further includes: determining whether the maximum movement displacement value is within a preset range, and if the maximum movement displacement value is within a preset range, pushing the Display panel.

DRAWINGS

The drawings are used to provide a further understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and the embodiments of the present application are used to explain the technical solutions of the present disclosure, and do not constitute a limitation of the technical solutions of the present disclosure.

1 is a schematic diagram of a related art human eye receiving image information path;

2 is a schematic structural diagram of a liquid crystal display module in a natural state according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a curved liquid crystal display module according to an embodiment of the present disclosure;

4 is a schematic structural diagram of a curvature radius adjusting device according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a change in radius of curvature of a display panel according to an embodiment of the present disclosure; FIG.

FIG. 6 is another schematic structural diagram of a liquid crystal display module according to an embodiment of the present disclosure;

FIG. 7 is a flowchart of a method for adjusting a radius of curvature provided by an embodiment of the present disclosure.

detailed description

The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

The human eye retina is curved. Figure 1 is a schematic diagram of the human eye receiving image information. As shown in FIG. 1 , when the external image is received by the human eye, when the external image is a curved surface, if the center of the image contour coincides with the center of the eye of the human eye, the image information loss is small, and the user is more natural, Comfortable visual experience. On the contrary, if the external image is a plane, the received image information may be greatly lost, and the user's visual experience may be poor.

In the related art, the liquid crystal display panel of the liquid crystal display module is mounted in a planar state, and the curvature radius of the liquid crystal display panel cannot be adjusted, so that the user receives the image information when viewing the image through the liquid crystal display module. Incomplete, and the visual experience is not good.

FIG. 2 is a schematic structural diagram of a liquid crystal display module in a natural state according to an embodiment of the present disclosure, and FIG. 3 is a schematic structural diagram of a liquid crystal display module after bending according to an embodiment of the present disclosure. As shown in FIG. 2 and FIG. 3 , the liquid crystal display module provided by the embodiment of the present disclosure includes a display panel 10 , a light guide plate 20 disposed on the back of the display panel, and a curvature radius adjusting device disposed on the front surface of the display panel and in contact with the display panel. 30.

The radius of curvature adjusting device 30 is configured to receive a radius of curvature specified by the user; calculate a moving displacement value according to the preset position information and the radius of curvature; and push the display panel 10 to move the displacement value toward the light guide plate 20, so that the display panel The radius of curvature of 10 is equal to the radius of curvature specified by the user.

In addition, the liquid crystal display module further includes a plastic plastic frame 40 and a metal frame. The display panel 10 is embedded in the plastic frame 40, and the metal frame is disposed on the outer side of the plastic frame 40. The metal frame includes an upper metal frame 51 and a lower metal frame 52, and the upper metal frame is connected to the lower metal frame. The present disclosure does not limit the manner in which the upper metal frame is connected to the lower metal frame.

The material of the metal frame is iron, aluminum or various alloys, etc., and the disclosure does not limit this.

Specifically, the preset position information is a distance between a center line of the projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel 10 is not bent.

Specifically, the curvature radius adjusting device can be placed at any position on the display panel, and the preset position information is different depending on the placement position. If the radius of curvature adjustment device is placed at the center of the display panel, the preset position information is zero. If the radius of curvature adjustment device is placed at the edge of the display panel, the preset position information is half of the length of the display panel.

In the liquid crystal display module provided by the embodiment of the present disclosure, the liquid crystal display module includes: a display panel, a light guide plate disposed on the back of the display panel, and a curvature radius adjusting device disposed on the front surface of the display panel and in contact with the display panel; The radius of curvature adjusting device is configured to receive a radius of curvature specified by the user; calculate a moving displacement value according to the preset position information and the radius of curvature; and push the display panel to move the displacement value toward the light guide plate, so that the radius of curvature of the display panel is equal to User specified radius of curvature. The embodiment of the present disclosure automatically adjusts the radius of curvature of the display panel according to the radius of curvature specified by the user by setting the radius of curvature adjusting device, and the implementation method is simple, not only can reduce the loss of image information received by the user, but also can bring the user Better visual experience.

In this embodiment, FIG. 4 is a schematic structural diagram of a curvature radius adjusting device according to an embodiment of the present disclosure. As shown in FIG. 4, the radius of curvature adjusting device includes a receiving module 31, a driving module 32, and a processing module 33.

Specifically, the receiving module 31 is configured to receive a radius of curvature specified by the user.

The receiving module 31 is a sensor capable of receiving a signal of the remote control device, and may be an infrared sensor or other signal sensing device. The disclosure does not specifically limit this. It should be noted that the user estimates the radius of curvature by the distance and angle between itself and the display panel, and transmits the radius of curvature to the receiving module through the remote control device.

The driving module 32 is configured to push the display panel to move the displacement value toward the light guide plate.

The driving module 32 can be an adjusting screw, and the processing module can push the display panel by controlling the rotation of the adjusting screw to bend the display panel.

The processing module 33 is configured to calculate a maximum displacement displacement value Δx ₀ according to a radius of curvature using a formula Δx ₀ = R(1-cos(L/2R)), and adopt a formula according to preset position information and Δx ₀

The movement displacement value Δx is calculated. Where R is the radius of curvature, L is the length of the display panel, and x is the preset position information. In addition, the processing module 33 is also used to control the movement of the drive module. Specifically, the processing module is a microprocessor or other processor, and the disclosure does not specifically limit this.

FIG. 5 is a schematic diagram of a change in radius of curvature of a display panel according to an embodiment of the present disclosure. The derivation process of the formula employed in the processing module 33 will be specifically described with reference to FIG.

Assume that the radius of curvature specified by the user is R, the length of the display panel is L, and the preset position information is x. The radius of curvature adjusting device pushes the display panel to move such that the radius of curvature of the display panel is equal to R, and the maximum movement displacement value of the display panel movement is Δx ₀ , and the bending angle of the display panel is 2α. It should be noted that, in a natural ideal state, that is, when the display panel is not bent, the curvature radius of the display panel is infinite.

Let R × 2α = L, where α∈(arsinL/2R, π/4) formula (1)

When the display panel is in a natural ideal state: arsinL/2R→0

It can be seen from Fig. 5 that cosα=(R-Δx)/R formula (2)

Calculated according to formula (1) and formula (2): Δx ₀ = R (1-cos(L/2R)) Equation (3)

According to formula (3), the first derivative of R for Δx is obtained:

Δx' ₀ =1-(cosL/2R+L/2R*sinL/2R) Formula (4)

Since α = L / 2R, according to the formula (4), the first derivative of α is obtained for Δx':

Δx′′ ₀ =-αcosα<0 Formula (5)

Since α∈(0,π/4), Δx' ₀ takes the range: Δx′ ₀ ∈(-0.26,0), ie Δx′ ₀ <0, that is, Δx ₀ =R(1-cos (L/2R)) is a monotonic reduction function for R, and the larger Δx ₀ is, the smaller R is.

In addition, as can be seen from FIG. 5,

According to the above analysis, if the center line of the curvature radius adjusting device coincides with the center line of the display panel, that is, the curvature radius adjusting device is placed in the middle of the display panel, at this time, x=0, then Δx=Δx ₀ . If the center line of the curvature radius adjusting device does not coincide with the center line of the display panel, at this time, x ≠ 0, the displacement value is according to the formula

Calculated, where Δx < Δx ₀ .

In this embodiment, the processing module is further configured to determine whether the maximum movement displacement value Δx ₀ is within a preset range, and if the Δx _{0 is} within the preset range, the control driving module moves. If Δx _{0 is} outside the preset range, the drive module movement is not controlled.

Specifically, the preset range is [0, Δx _max ], wherein Δx _max is a maximum movement displacement value that ensures that the display panel function does not fail.

In the present embodiment, the radius of curvature adjusting means may be a plurality of number, time, the preset position information of the mobile apparatus and a maximum displacement amount in accordance with each processing module adjusting a curvature radius Δx ₀ using Equation (6) is calculated for each The radius of curvature adjustment device moves the displacement amount Δx _i , and after the calculation, simultaneously triggers the movement of the plurality of curvature radius adjusting devices, wherein i=1, . . . , N, N are the number of the curvature radius adjusting devices.

It should be noted that FIG. 6 is another schematic structural diagram of a liquid crystal display module according to an embodiment of the present disclosure. As shown in the figure, the number of the curvature radius adjusting devices in Fig. 6 is three, and Figs. 2 and 3 are each taken as an example. The number of curvature radius adjusting devices can be determined according to actual needs, and the present disclosure does not limit the number of curvature radius adjusting devices.

In the embodiment, by providing a plurality of curvature radius adjusting devices in the liquid crystal display module, it is possible to realize a multi-point simultaneous triggering adjustment of the curvature radius of the display panel. This type of adjustment can make the display panel evenly stressed, so that the radius of curvature of the effective use is larger.

Alternatively, in order to make the force of the display panel more uniform, the curvature radius adjusting device may be symmetrically disposed on the display panel.

In addition, in order to ensure that the curvature radius adjusting device does not damage the display panel, the liquid crystal display panel is more curved. The liquid crystal display module provided by the embodiment of the present disclosure further includes a buffer device disposed between the curvature radius adjusting device and the display panel. .

Specifically, the buffer device may be multiple and corresponding to the curvature radius adjusting device, that is, each buffer device corresponds to one radius of curvature adjusting device. Alternatively, the buffer device may be one, and the buffer device is overlaid on the display panel. Specifically, the setting manner of the buffer device is determined according to actual needs, and the disclosure is not limited thereto.

Specifically, the cushioning device material is foam or plastic. It should be noted that the present disclosure does not specifically limit the material of the buffer device as long as the material of the buffer device does not damage the display panel.

Based on the disclosed concept of the above embodiments, an embodiment of the present disclosure provides a method for adjusting a radius of curvature, which is implemented by using the liquid crystal display module provided in the above embodiments. FIG. 7 is a flowchart of a method for adjusting a radius of curvature provided by an embodiment of the present disclosure. As shown in FIG. 7, the method for adjusting the radius of curvature specifically includes the following steps.

Step 100: Receive a radius of curvature specified by a user.

Specifically, the step is implemented by a receiving module of the liquid crystal display module. The receiving module is a sensor capable of receiving the signal of the user's remote control device, and may be an infrared sensor or other signal sensing device. The disclosure does not specifically limit this.

Step 200: Calculate a motion displacement value according to preset position information and a radius of curvature.

Specifically, the step is implemented by a processing module of the liquid crystal display module. The processing module is a microprocessor or other processor, and the disclosure does not specifically limit this.

The preset position information is a distance between a center line of the projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel is not bent.

Wherein, step 200 specifically includes:

Step 201: Calculate a maximum displacement displacement value Δx ₀ according to a radius of curvature using a formula Δx ₀ = R(1-cos(L/2R)), where R is a radius of curvature and L is a length of the display panel.

Specifically, the maximum moving position value is a required moving distance of the radius of curvature adjusting device disposed on the center line of the display panel.

Step 202: Apply a formula according to preset position information and a maximum movement displacement value Δx ₀

The movement displacement value Δx is calculated, where x is preset position information.

It should be noted that the derivation process of the formula adopted in step 201 and step 202 has been described in the embodiment, and is not repeated here.

Step 300: Push the display panel to move the displacement value toward the light guide plate such that the radius of curvature of the display panel is equal to a radius of curvature specified by the user.

Specifically, the step is implemented by a driving module of the liquid crystal display module. The driving module may be an adjusting screw, and the processing module may bend the display panel toward the light guide plate by controlling the rotation of the adjusting screw.

In addition, after the step 200, the radius of curvature adjustment method provided by the embodiment of the present disclosure further includes:

Step 400: Determine whether the maximum movement displacement value is within a preset range, and if the maximum movement displacement value is within a preset range, push the display panel. Wherein, the preset range is [0, Δx _max ], wherein Δx _max is a maximum displacement displacement value that ensures that the display panel function does not fail.

It should be noted that if the calculated displacement value exceeds the preset range, the display substrate is not moved.

The radius radius adjustment method provided by the embodiment of the present disclosure includes: receiving a radius of curvature specified by a user; obtaining a displacement value according to position information and a radius of curvature of the curvature radius adjusting device; wherein the position information is a curvature radius adjusting device on the display panel The distance between the center line of the projection and the center line of the display panel; the distance of the display panel moving the displacement value toward the light guide plate such that the radius of curvature of the display panel is equal to the radius of curvature specified by the user, and embodiments of the present disclosure can be based on the user The specified radius of curvature automatically adjusts the radius of curvature of the display panel, and the implementation method is simple, which not only can reduce the loss of image information received by the user, but also provides a better visual experience for the user. The embodiments disclosed in the present disclosure are as described above, but the description is only for the purpose of understanding the present disclosure, and is not intended to limit the disclosure. Any modification or variation in the form and details of the implementation may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Claims

A liquid crystal display module includes: a display panel, a light guide plate disposed on a back surface of the display panel, and a curvature radius adjusting device disposed on a front surface of the display panel and in contact with the display panel;

The radius of curvature adjusting device is configured to receive a radius of curvature specified by the user; calculate a moving displacement value according to the preset position information and the radius of curvature; and push the display panel to move the moving displacement toward the light guide plate The value is such that the radius of curvature of the display panel is equal to the radius of curvature specified by the user.
The liquid crystal display module of claim 1 , wherein the preset position information is a center line of a projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel is not bent the distance between.
The liquid crystal display module of claim 2, wherein the radius of curvature adjusting device comprises: a receiving module, a driving module and a processing module;

The receiving module is configured to receive a radius of curvature specified by a user;

The driving module is configured to push the display panel to move the movement displacement value toward the light guide plate;

The processing module is configured to calculate a maximum displacement displacement value Δx 0 according to the radius of curvature by using a formula Δx 0 = R(1-cos(L/2R)), and according to the preset position information and the Δx 0 , Adopt formula
Calculating the movement displacement value Δx, where R is the radius of curvature, L is the length of the display panel, and x is the preset position information;

The processing module is further configured to control movement of the driving module.
The liquid crystal display module according to claim 3, wherein the driving module is an adjusting screw.
The liquid crystal display module of claim 3, wherein the processing module is further configured to determine whether the maximum movement displacement value is within a preset range, and if the maximum movement displacement value is within a preset range, controlling the driving module mobile.
The liquid crystal display module according to claim 5, wherein the predetermined range is [0, Δx max ], wherein Δx max is a maximum displacement displacement value that ensures that the display panel function does not fail.
The liquid crystal display module according to claim 1, wherein the number of the curvature radius adjusting devices is plural.
The liquid crystal display module of claim 1, further comprising a buffering device disposed between the radius of curvature adjusting device and the display panel.
The liquid crystal display module according to claim 8, wherein the number of the curvature radius adjusting means is plural.
The liquid crystal display module according to claim 9, wherein the plurality of buffer devices are in one-to-one correspondence with the curvature radius adjusting device;

Alternatively, the buffering device is overlaid on the display panel.
The liquid crystal display module according to any one of claims 8 to 10, wherein the buffering device is made of foam or plastic.
The liquid crystal display module of claim 1 , further comprising a plastic frame and a metal frame, wherein the display panel is embedded in the plastic frame, and the metal frame is disposed outside the plastic frame.
A method for adjusting a radius of curvature, which is implemented by using the liquid crystal display module according to any one of claims 1 to 12, comprising the following steps:

Receiving a radius of curvature specified by the user;

Calculating a movement displacement value according to the preset position information and the radius of curvature; wherein the preset position information is a center line of the projection of the curvature radius adjusting device on the display panel and a center line of the display panel when the display panel is not bent Distance between

Pushing the display panel to move the movement displacement value toward the light guide plate such that the curvature radius of the display panel is equal to a radius of curvature specified by the user.
The method according to claim 13, wherein said calculating the displacement value according to the preset position information and the radius of curvature comprises:

According to the radius of curvature, the maximum displacement displacement value Δx 0 is calculated by using the formula Δx 0 = R(1-cos(L/2R));

Using the formula according to the preset position information and the Δx 0
The movement displacement value Δx is calculated, where R is the radius of curvature, L is the length of the display panel, and x is the preset position information.
The method of claim 14, wherein after calculating the maximum movement displacement value Δx0, the method further comprises:

Determining whether the maximum movement displacement value is within a preset range, and if the maximum movement displacement value is within a preset range, pushing the display panel.
The method of claim 15, wherein the predetermined range is [0, Δx max ], wherein Δx max is a maximum movement displacement value that ensures that the display panel function does not fail.