CN214225613U - Liquid crystal module with writing feedback function, commercial display terminal and writing display system - Google Patents

Abstract

The utility model discloses a liquid crystal module, commercial display terminal and writing display system of area writing feedback, this liquid crystal module include backplate, frame subassembly and locate optical diaphragm, liquid crystal display panel, protection film on the backplate in proper order; the frame assembly comprises a pressing part, and the pressing part is used for pressing the liquid crystal panel to the back plate; the liquid crystal panel is a horizontal electric field type liquid crystal panel; the commercial display terminal comprises the liquid crystal module; the writing display system comprises the commercial display terminal and a writing pen; according to the liquid crystal module, toughened glass is omitted, and a horizontal electric field type liquid crystal panel is adopted, so that the liquid crystal panel can provide writing feedback when a user writes; the liquid crystal module and the commercial display terminal have a writing feedback function, can realize the lightening and thinning of large-screen products, have better visual angle, have stronger sharpness and better restorability when being displayed, and have good display effect; the writing display system can provide clear and sensitive writing feedback.

Description

Liquid crystal module with writing feedback function, commercial display terminal and writing display system

Technical Field

The utility model relates to a display device technical field especially relates to a liquid crystal module, commercial display terminal and the display system of writing of feedback are write in area.

Background

The liquid crystal display is widely applied due to the characteristics of electricity saving, low consumption, no radiation, soft picture, thin body and the like. The basic structure of the liquid crystal display is a liquid crystal module, and the liquid crystal module comprises a liquid crystal panel (OC, Open cell), a backlight module and a frame assembly; the liquid crystal module adopted by the commercial display terminal generally needs to be provided with toughened glass outside the liquid crystal panel to protect the liquid crystal panel.

However, the existing commercial display terminal with touch writing generally has no writing feedback function, and when a user writes on a display screen, the user experiences generally.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the utility model provides a liquid crystal module, it can provide and write the feedback, can provide more audio-visual writing for the user and experience, and it is more frivolous, and display effect is good.

The embodiment of the utility model provides a still another aim at: the utility model provides a commercial display terminal, it can provide writing feedback, and is lighter and thinner, and the display effect is good.

The embodiment of the utility model provides a another aim at: a writing display system is provided that is capable of providing clearer and more sensitive writing feedback.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a liquid crystal module with writing feedback comprises a back plate, a frame assembly, an optical diaphragm, a liquid crystal panel and a protective film, wherein the optical diaphragm, the liquid crystal panel and the protective film are sequentially arranged on the back plate; the protective film covers the liquid crystal panel; the liquid crystal panel is a horizontal electric field type liquid crystal panel; the frame assembly comprises a pressing part, and the pressing part is used for pressing the liquid crystal panel to the back plate.

Preferably, the liquid crystal panel is an IPS panel.

Preferably, the liquid crystal display panel further comprises a protective film, and the protective film covers the surface of one side, far away from the optical film, of the liquid crystal panel.

Preferably, the protective film is an AG film.

Preferably, a diffusion plate is further arranged between the back plate and the optical diaphragm; the liquid crystal panel is fixedly adhered to the optical diaphragm, and one side, far away from the liquid crystal panel, of the optical diaphragm is fixedly adhered to the diffusion plate.

Preferably, the liquid crystal display panel further comprises a first double-sided tape and a second double-sided tape, the liquid crystal display panel is fixedly adhered to the optical film through the first double-sided tape, and the optical film is fixedly adhered to the diffusion plate through the second double-sided tape.

Preferably, the frame assembly comprises a frame body and a pressing strip; the frame body comprises a first frame part and a second frame part which are connected with each other; in the horizontal direction, the first frame part is arranged on the lateral side of the liquid crystal panel; the second frame part is arranged on one side of the liquid crystal panel, which is far away from the back plate;

the pressing part is the pressing strip which is arranged between the second frame part and the liquid crystal panel; in the horizontal direction, the end portion of the bead relative to the second frame portion protrudes toward the inside of the liquid crystal module.

Preferably, the bead is fixed to the second frame portion by a bonding layer.

Preferably, the bonding layer is an adhesive layer; and one side of the second frame part, which is close to the pressing strip, is provided with an overflow glue groove, and the opening of the overflow glue groove faces the pressing strip.

Preferably, the device also comprises a height adjusting piece; the height adjusting member is clamped between the diffusion plate and the back plate.

A commercial display terminal comprises the liquid crystal module.

A writing display system comprises the commercial display terminal and a writing pen, wherein the outer diameter of a pen point of the writing pen is smaller than or equal to 5 mm.

The utility model has the advantages that: according to the liquid crystal module, toughened glass is omitted, the horizontal electric field type liquid crystal panel with the protective film covered on the surface is adopted, when a user writes, writing feedback light spots can appear on the surface of the liquid crystal panel, the user can feel the writing effect more intuitively, and the writing experience of the user is better;

the liquid crystal module and the commercial display terminal have writing feedback, can realize the lightening and thinning of large-screen products, have better visual angle, have stronger sharpness and better restorability when the liquid crystal module displays, and have good display effect;

the writing display system can provide clearer and more sensitive writing feedback.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic cross-sectional structure diagram of a liquid crystal module according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an exploded view of a liquid crystal module according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating a usage status of a liquid crystal module according to an embodiment of the present invention;

FIG. 5 is a second schematic view illustrating a usage status of the liquid crystal module according to an embodiment of the present invention;

fig. 6 is a schematic view of the connection relationship of the internal structure of the liquid crystal module according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a frame assembly according to an embodiment of the present invention;

in the figure: 10. a back plate; 11. a flat plate portion; 20. a frame component; 21. a frame body; 211. a first frame portion; 212. a second frame portion; 2121. an overflow glue groove; 22. layering; 30. a diffusion plate; 40. an optical film; 50. a liquid crystal panel; 51. liquid crystal molecules; 60. a protective film; 71. a first double-sided tape; 72. a second double-sided tape; 80. a height adjustment member; 91. a touch frame PCB; 92. a light filtering strip; 200. a writing pen; 2001. a pen point; 3001. light spots; 3002. handwriting.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" are to be understood broadly, e.g. as a fixed connection, a detachable connection or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a liquid crystal module, it has cancelled toughened glass to adopt the liquid crystal display panel 50 of horizontal electric field type, can provide and write the feedback, and the product is more frivolous, and visual angle is wide, and the display effect is good.

The horizontal direction in the present invention refers to a direction parallel to the liquid crystal panel 50 of the liquid crystal module. As shown in fig. 1, the thickness direction is a z direction and a-z direction parallel to and opposite to the z direction.

As shown in fig. 1-7, in an embodiment of the liquid crystal module of the present invention, the liquid crystal module is designed without tempered glass, and the liquid crystal module includes a back plate 10, a frame assembly 20, and an optical film 40, a liquid crystal panel 50, and a protective film 60 sequentially disposed on the back plate 10; the protective film 60 covers the liquid crystal panel 50; the liquid crystal panel 50 is a horizontal electric field type liquid crystal panel 50; the frame assembly 20 includes a pressing portion, the pressing portion abuts against one side of the liquid crystal panel 50 far away from the back plate 10 to press the liquid crystal panel 50 between the pressing portion and the back plate 10, so as to fix the liquid crystal panel 50.

The optical film 40 is a structure in the backlight assembly, and plays a role in uniformizing and condensing light of the backlight.

The utility model discloses a liquid crystal module adopts horizontal electric field type liquid crystal display panel 50, cancel toughened glass simultaneously, let writing pen 200 directly contact protection film 60, nib 2001's pressure sees through the protection film 60 and directly transmits to liquid crystal display panel 50 on, inside liquid crystal molecule 51 can take place to squint (as shown in fig. 4) under nib 2001's the pressure of writing, influence the polarization direction that the liquid crystal was set a light, can produce the white field at the display area to feedback facula 3001 (as shown in fig. 5) appears near nib 2001 pressure point.

The liquid crystal panel 50 may be, but not limited to, an IPS panel, an ADS panel. The liquid crystal panel 50 is preferably an IPS panel.

As shown in fig. 5, the utility model discloses a liquid crystal module, when the user writes on display module, feedback facula 3001 can appear in nib 2001 position, and the user can in time perceive the contact of nib 2001 and screen, lets the user know to write the function and is just taking effect to can know current touch-control point and write the relative position between handwriting 3002, the user can feel more directly perceivedly and write the effect, and the user writes and experiences better.

The liquid crystal module cancels toughened glass, adopts a thin protective film 60 to protect the liquid crystal panel 40, prevents the liquid crystal panel 40 from being scratched during writing, ensures that writing pressure can be timely transmitted to the liquid crystal panel 50 when the pen point 2001 writes, liquid crystal molecules 51 generate effective offset, and the liquid crystal module can generate a feedback light spot 3001 visible for a user; and the deviation between the position of the feedback light spot 3001 seen by the user and the actual position thereof caused by the over-thickness of the toughened glass is avoided, and the feedback effect is ensured.

If the liquid crystal module employs the vertical electric field type liquid crystal panel 50, the user cannot quickly confirm the position of the feedback light spot 3001 without generating the feedback light spot 3001 or with a weak feedback light spot 3001. The utility model discloses a liquid crystal module has adopted horizontal electric field type liquid crystal display panel 50, can guarantee feedback facula 3001's effective display, guarantees to write the feedback effect to this kind writes facula 3001 and only comparatively obviously to writing the person.

The liquid crystal module of the utility model, because of canceling the toughened glass, has reduced weight and is lighter and thinner; particularly, when the liquid crystal module is applied to a large-screen commercial display terminal, the terminal of the commercial display terminal can be lighter and thinner, and the appearance is attractive; and the liquid crystal module has a better visual angle.

Present adoption toughened glass's LCD module is because toughened glass's luminousness is lower to the inside cleanliness factor of glass is inconsistent, is watched by the outside, and the display frame appears fuzzy easily, the condition of resolution ratio step-down, and the utility model discloses an LCD module has cancelled toughened glass, and the acutance of display frame is stronger, the edge is more clear, the reduction is better. Specifically, when the protective film 60 is provided, it is ensured that the protective film 60 is attached at least to the display operation area of the liquid crystal panel 50.

Preferably, an AG film is used as the protective film 60, and the AG film is an anti-glare protective film. Compared with the common protective film 60, the AG film has high wear resistance, can improve the stiffness of the liquid crystal panel 50, protect the liquid crystal panel 50, prevent the liquid crystal panel 50 from scratching and is suitable for writing; secondly, the AG film can effectively eliminate strong glare, so that a user can more comfortably watch the liquid crystal display module, and the use comfort of the user can be improved when the liquid crystal display module is used outdoors; moreover, the AG film has high light transmittance and no obvious granular feeling, and can ensure the display effect to the maximum extent; in addition, the AG film has high sensitivity and does not affect the writing effect.

Preferably, the thickness of the AG film is 0.150mm to 0.210 mm. In this example, the thickness of the AG film was 0.188 mm.

The AG film is not limited to the protective film 60 of the present invention, and in other embodiments, a film such as an AF film or an AR film may be used as the protective film 60.

In this embodiment, the backlight module of the liquid crystal module is a direct-type backlight module, and the liquid crystal module further includes a diffuser plate 30 having a backlight light-homogenizing function. On the basis of the structure, in order to improve the stiffness of the liquid crystal panel 50, closely laminate between the optical film 40 and the diffuser plate 30, that is, the liquid crystal panel 50 is fixed to the optical film 40 through a very thin bonding layer, the optical film 40 is far away from one side of the liquid crystal panel 50 and is fixed to the diffuser plate 30 through a very thin bonding layer in a sticking manner, so that the liquid crystal panel 50, the integrity between the optical film 40 and the diffuser plate 30 is improved, thereby effectively improving the stiffness of the liquid crystal panel 50, and avoiding the liquid crystal panel 50 from shaking when writing on the liquid crystal module.

On the basis of the above structure, the liquid crystal module further includes a first double-sided tape 71 and a second double-sided tape 72, the liquid crystal panel 50 is fixed to the optical film 40 by the first double-sided tape 71, and the optical film 40 is fixed to the diffusion plate 30 by the second double-sided tape 72. The liquid crystal panel 50, the optical film 40 and the diffusion plate 30 are adhered together by a double-sided adhesive tape, so that the assembly is convenient.

Preferably, the first double-sided tape 71 is attached to the edge of the liquid crystal panel 50 close to the optical film 40, and the second double-sided tape 72 is attached to the edge of the diffusion plate 30 close to the optical film 40, so as to prevent the double-sided tape from affecting the display effect of the central display area of the liquid crystal panel 50.

Preferably, in order to ensure the reliable pressing of the bezel assembly 20 on the liquid crystal panel 50 and make the bezel assembly 20 appear narrower in the appearance of the liquid crystal module, the bezel assembly 20 in this embodiment includes a bezel body 21 and a bead 22; the frame body 21 includes a first frame portion 211 and a second frame portion 212 connected to each other; in the horizontal direction, the first frame portion 211 is provided in the lateral direction of the liquid crystal panel 50; the second frame portion 212 is disposed on a side of the liquid crystal panel 50 away from the back plate 10;

the pressing part is a pressing strip 22, the pressing strip 22 is arranged between the second frame part 212 and the liquid crystal panel 50, and the pressing strip 22 is used for pressing the liquid crystal panel 50 to the back plate 10; in the horizontal direction, the end of the bead 22 with respect to the second frame portion 212 protrudes toward the inside of the liquid crystal module.

In the embodiment, the pressing strip 22 is arranged, the pressing strip 22 protrudes relative to the frame body 21 to ensure the contact area between the pressing strip 22 and the liquid crystal panel 50, so that the fixing effect on the liquid crystal panel 50 is ensured, meanwhile, a frame main body with a narrow width can be adopted, the volume of the frame main body is larger than that of the pressing strip 22, and the frame main body with the narrow width is adopted, so that the liquid crystal module is narrower in appearance.

As shown in fig. 7, the width dimension a of the frame main body, i.e. the frame assembly 20 of the present embodiment, is a smaller frame main body, so that the liquid crystal module is visually narrow, the liquid crystal panel 50 is fixed by the pressing strip 22, and the fixing effect of the liquid crystal panel 50 is ensured.

The liquid crystal module is also provided with an infrared sensing assembly, and the infrared sensing assembly can realize infrared emission and receiving functions so as to realize writing and touch functions.

Further, the frame assembly 20 includes a frame body 21 and a pressing bar 22, the frame body 21 is provided with a light path window; the liquid crystal module further comprises an infrared sensing assembly arranged inside the frame body 21 and a filter strip 92 covering the light path window; the infrared sensing assembly comprises a touch frame PCB91 and an infrared receiving head, and the filter head is used for filtering natural light so as to avoid the influence of the natural light on the infrared receiving head; the light path window is disposed on the second frame portion 212, and the light path window displays a touch area toward the middle of the liquid crystal panel 50 in the horizontal direction, so that the infrared sensing element can detect a touch coordinate when a user touches the liquid crystal panel 50 with a finger or a stylus 200.

The pressing strip 22 is fixed on the second frame portion 212, or the pressing strip 22 is pressed between the second frame portion 212 and the liquid crystal panel 50.

In this embodiment, the frame body 21 is a carrier of the infrared sensing assembly, and the second frame portion 212 is a carrier of the light filtering strip 92.

The bead 22 may be, but is not limited to, hot-dip galvanized steel Sheet (SECC), electro-galvanized steel Sheet (SGCC). The hot dip galvanized steel Sheet (SECC) and the electrogalvanized steel Sheet (SGCC) have beautiful appearances and are resistant to fingerprints.

In this embodiment, the thickness of the bead 22 is 0.8mm to 2 mm. The bead 22 is preferably 1mm thick.

Since the size of the light path window in the thickness direction must ensure an effective size to ensure effective operation of the infrared transmitting and receiving functions, and thus the second frame portion 212 has a certain thickness, the visual sense of the second frame portion 212 is high, and if the second frame portion 212 having a large width is used to ensure the pressing and fixing effect of the bezel assembly 20 on the liquid crystal panel 50, the user may feel that the bezel body 21 of the liquid crystal panel 50 is wide in appearance. As shown in fig. 1 and 7, in this embodiment, in order to fix the liquid crystal panel 50 and make the frame assembly 20 visually narrow on the front appearance of the liquid crystal module, the pressing strip 22 is disposed between the second frame portion 212 and the liquid crystal panel 50, the thickness of the pressing strip 22 is relatively small, and the end portion of the pressing strip 22 opposite to the second frame portion 212 extends toward the middle area of the liquid crystal panel 50 to ensure the effective contact area between the pressing strip 22 and the protective film 60, so as to ensure the pressing effect on the liquid crystal panel 50, so that the width of the second frame portion 212 can be reduced, and the width of the frame body 21 can be reduced, so that the frame assembly 20 visually appears relatively narrow, and the appearance of the liquid crystal module is more indirectly attractive.

Preferably, in order to ensure reliable pressing of the bead 22 against the liquid crystal panel 50, the bead 22 is fixed to the second frame portion 212 by using an adhesive, and the adhesive is cured to form a bonding layer.

The adhesive can be, but is not limited to, glue such as AB glue, glass glue, shadowless glue, and the like.

Preferably, after dispensing, when the bead 22 is combined with the second frame portion 212 in a pressing manner, excess glue overflows from the end portion of the second frame portion 212, so that the appearance of the liquid crystal module is not influenced by the overflow; an overflow groove 2121 is disposed on a side of the second frame portion 212 close to the bead 22, the overflow groove 2121 extends along an extending direction of the frame, an opening of the overflow groove 2121 faces the bead 22, so that when the dispensing amount is slightly large, the excess glue overflows into the overflow groove 2121 when the bead 22 and the second frame portion 212 are pressed together. The glue overflow groove 2121 provides a constant volume of glue space, so that the tight combination of the molding bar 22 and the second frame portion 212 can be ensured, and the glue can be prevented from overflowing the appearance surface.

Preferably, in order to be compatible with the infrared sensing assemblies of different specifications and the bezel bodies 21 of different specifications, the liquid crystal module is further provided with a height adjusting member 80, and the height adjusting member 80 is further provided between the diffusion plate 30 and the back plate 10. By adopting the height adjusting members 80 with different thicknesses, the liquid crystal display panel assembly can adapt to the frame bodies 21 with different thicknesses, and the frame assembly 20 can reliably press the liquid crystal panel 50 on the back plate 10.

Specifically, in order to support and cover the diffusion plate 30, the optical film 40, and the liquid crystal panel 50 by the backplane 10, the backplane 10 includes a flat plate portion 11 extending in the horizontal direction, and the height adjusting member 80 is interposed between the diffusion plate 30 and the backplane 10.

In this embodiment, the height adjuster 80 is foam. The foam can be made of foam adhesive with adhesive surfaces on both sides, so that the foam adhesive is fixed between the diffusion plate 30 and the back plate 10.

It should be noted that the height adjusting member 80 may also adopt a structure having a certain thickness and having a shock absorbing and buffering function, such as a silicone pad.

In this embodiment, the upper frame, the left frame and the right frame of the liquid crystal module adopt the structural design of the frame assembly 20 shown in fig. 1; the backboard 10 does not support the frame main body of the ground side frame of the liquid crystal module, and the frame main body is fixed on the backboard 10 through other fixing components (such as connecting plates).

In other embodiments, all or part of the bezel of the liquid crystal module is designed as the bezel assembly 20 shown in fig. 1.

Preferably, as shown in fig. 3, the frame body 21, the touch frame PCB91, the pressing bar 22, and the height adjuster 80 of the liquid crystal module of the present invention are all frame-shaped structures.

The utility model also provides a commercial display terminal, it adopts foretell liquid crystal module. This commercial display terminal's display screen has the feedback of writing, can realize the frivolous of big screen product to but have better visual angle, the sharpness is stronger when the liquid crystal module shows that the reduction is better, and display effect is good.

The commercial display terminal is a display device applied to the fields of advertisement, self-service, meeting, teaching and the like, and can be but is not limited to a touch query all-in-one machine, an information display terminal, a meeting panel and a teaching panel.

The utility model also provides a write display system, it includes foretell liquid crystal module, still includes writing pen 200, and writing pen 200's nib 2001's external diameter is x, and x is less than or equal to 4 m.

Preferably, x is 3mm or less and the tip 2001 is curved. Nib 2001 may have a diameter of, but not limited to, 1.5mm, 2.5mm, 3 mm.

Through the nib 2001 who adopts little external diameter, when guaranteeing that the pen 200 writes on the display screen, the area of contact of nib 2001 and display screen is less, and when exerting pressure the same, it is bigger to act on the pressure with liquid crystal display panel 50, and the feedback facula 3001 that produces on liquid crystal display panel 50 is more clear sensitive, provides better feedback and experiences.

Preferably, the nib 2001 employs a PE sintered nib 2001. When the PE sintered pen point 2001 is used for writing, the original writing experience of a pencil on paper can be restored, and the writing experience is better.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in a descriptive sense and with reference to the illustrated orientation or positional relationship, and are used for convenience in description and simplicity in operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (11)

1. The liquid crystal module with writing feedback is characterized by comprising a back plate (10), a frame component (20), an optical diaphragm (40), a liquid crystal panel (50) and a protective film (60), wherein the optical diaphragm, the liquid crystal panel and the protective film are sequentially arranged on the back plate (10); the protective film (60) covers the liquid crystal panel (50); the liquid crystal panel (50) is a horizontal electric field type liquid crystal panel (50); the frame assembly (20) comprises a pressing part used for pressing the liquid crystal panel (50) to the back plate (10).

2. The liquid crystal module with writing feedback of claim 1, wherein the liquid crystal panel (50) is an IPS panel.

3. The liquid crystal module with writing feedback as claimed in claim 1, wherein the protective film (60) is an AG film.

4. The liquid crystal module with writing feedback of claim 1, wherein a diffusion plate (30) is further disposed between the back plate (10) and the optical film (40); the liquid crystal panel (50) is fixedly adhered to the optical film (40), and one side, far away from the liquid crystal panel (50), of the optical film (40) is fixedly adhered to the diffusion plate (30).

5. The liquid crystal module with writing feedback function according to claim 4, further comprising a first double-sided tape (71) and a second double-sided tape (72), wherein the liquid crystal panel (50) is fixedly adhered to the optical film (40) through the first double-sided tape (71), and the optical film (40) is fixedly adhered to the diffusion plate (30) through the second double-sided tape (72).

6. The liquid crystal module with writing feedback of any one of claims 1 to 5, wherein the bezel assembly (20) comprises a bezel body (21) and a bead (22); the frame body (21) comprises a first frame part (211) and a second frame part (212) which are connected with each other; the first frame part (211) is arranged on the lateral side of the liquid crystal panel (50) in the horizontal direction; the second frame part (212) is arranged on one side of the liquid crystal panel (50) far away from the back plate (10);

the pressing part is the pressing strip (22), and the pressing strip (22) is arranged between the second frame part (212) and the liquid crystal panel (50); in the horizontal direction, the end of the bead (22) relative to the second frame part (212) protrudes towards the inner side of the liquid crystal module.

7. The liquid crystal module with writing feedback of claim 6, wherein the bead (22) is fixed with the second frame portion (212) by a bonding layer.

8. The liquid crystal module with writing feedback of claim 7, wherein the bonding layer is an adhesive layer; one side, close to the pressing strip (22), of the second frame portion (212) is provided with a glue overflowing groove (2121), and an opening of the glue overflowing groove (2121) faces the pressing strip (22).

9. The liquid crystal module with writing feedback of claim 4, further comprising a height adjusting member (80); the height adjuster (80) is provided between the diffusion plate (30) and the back plate (10).

10. A commercial display terminal comprising the liquid crystal module according to any one of claims 1 to 9.

11. A writing display system comprising the commercial display terminal according to claim 10, further comprising a writing pen (200), wherein an outer diameter of a pen tip (2001) of the writing pen (200) is less than or equal to 5 mm.

Images