TW201303204A - Optical devices and display devices - Google Patents

Abstract

A optical module, connected to a optical plate, comprises a transparent element, a first mask element, a second mask element and an adhesive element. The first mask element and the second mask element locate on a surface of the transparent element. The first mask element surrounds the second mask element, and the thickness of the first mask element is greater than that of the second mask element. The adhesive element covers over parts of the second mask element, and the adhesive element is surrounded by the first mask element. The optical plate is connected to the transparent element by the adhesive element.

Description

Optical module and display device

The present invention relates to an optical module, and more particularly to an optical module connected to an optical panel.

A conventional panel protection structure is provided with a transparent glass attached to the light-emitting side of the optical panel. A layer of shading ink is applied to the side of the transparent glass near the optical panel. Shading inks can be used to block light from escaping to avoid unnecessary light leakage.

In general, optical panels and clear glass are bonded in a liquid or solid transparent optical adhesive. However, since the transparent glass has a light-shielding ink around it, when the transparent optical adhesive covers the light-shielding ink, the liquid transparent optical adhesive may overflow to a place other than the light-shielding ink. On the other hand, since the light-shielding ink is printed on the transparent glass, there is a difference in height between the light-shielding ink and the transparent glass, and thus, when the solid transparent transparent optical adhesive is used for bonding, the light-shielding ink and the transparent glass are used. The breaks may create bubbles and fail to meet shipping specifications.

If it is a problem to solve the above-mentioned trouble and generate bubbles, the conventional technique proposes to reduce the thickness of all the light-shielding inks. However, when the thickness of all the shading inks is reduced, the effect of shading is also lowered. That is to say, light may penetrate through the reduced thickness of the shading ink, causing a wide range of light leakage problems.

In summary, the conventional technique creates a technical conflict between the shading effect of the shading ink and the trade-off of reducing the gap.

In view of the above problems, the present invention provides an optical module and a display device.

In an embodiment of the optical module of the present invention, the optical module is assembled on the optical panel, wherein the optical module comprises a transparent element, a first light blocking element, a second light blocking element and an following element.

The transparent element has a first surface, and the first light shielding element and the second light shielding element are both located at an outer edge of the first surface, wherein the second light shielding element is surrounded by the first light shielding element, and an outer side of the second light shielding element Connected to one of the inner sides of the first shading element, further, the first shading element has a first thickness, the second shading element has a second thickness, and the second thickness is less than the first thickness.

The above-mentioned subsequent component is also located on the first surface and is bonded to the optical panel, and then the component simultaneously covers a portion of the second light-shielding component and is also surrounded by the first light-shielding component.

In another aspect, in an embodiment of the display device of the present invention, the display device includes a backlight, a display unit, an optical panel, an illuminating element, a shading element, and a transparent element. The backlight produces a uniform light. The display unit receives uniform light and displays a picture. The optical panel is disposed on one side of the display unit. The component is then placed on the side of the optical panel relative to the display unit. The shading element surrounds an adjacent element, and the shading element has a recessed area on one side of the opposite edge. The transparent element is disposed on the side of the subsequent element relative to the optical panel. The transparent element has a first surface, the first surface comprising a light transmissive region and a light blocking region. The shading element is located in the light blocking area and a portion of the follower element is located in the light transmissive area.

In an embodiment, the second shading element comprises a frame or a plurality of bumps separated from each other.

In one embodiment, the subsequent elements include Optically Clear Adhesive (OCA) or Super View Resin (SVR).

In an embodiment, the first shading element and the second shading element comprise a shading ink.

In one embodiment, the transparent component comprises a glass substrate or a plastic substrate.

According to the optical module and the display device proposed by the present invention, since the first shading element and the second shading element have two different thicknesses which are lower in height and lower in the outer layer, and then the element only covers the second shading element, the second shading can be avoided. The height difference between the element and the transparent element is too large to generate bubbles, and since the subsequent element is located within the range enclosed by the first light-shielding element, the element can be blocked by the first light-shielding element and prevent leakage of the element. occur.

The detailed features and advantages of the present invention are described in the following detailed description of the embodiments of the present invention. The related objects and advantages of the present invention will be readily understood by those skilled in the art.

Please refer to "1", "2A" and "2B", and "1" is a cross-sectional view of an embodiment of the optical module of the present invention, "2A" and "2B" A top view of an embodiment of an optical module of the present invention.

As shown, the optical module 10 includes a transparent element 20, a first shading element 31, a second shading element 32, and an enclosing element 40. The optical module 10 can be disposed on any display unit, and the display unit can be, but not limited to, a liquid crystal display panel, a plasma display panel, or an organic light emitting diode display panel, and the like.

The optical module 10 is used to connect to an optical panel 50. The optical module 10 is disposed on the light exiting side of the optical panel 50 and can be bonded to the optical panel 50 by the following component 40. In this embodiment, the optical panel 50 can be a touch panel or a three-dimensional display panel.

In the embodiment, the transparent component 20 can be an optical component such as a glass substrate or a plastic substrate. For example, the glass substrate can be used to view the display device through the transparent component 20 in a normal use state. The resulting image, and the shape of the transparent element 20 can be rectangular, polygonal, circular, or other irregular shape. Furthermore, the transparent element 20 has a first surface 22 and a second surface 24 opposite each other.

The first shading element 31 is disposed on the first surface 22 and located at the outer edge of the first surface 22, in other words, the first shading element 31 forms a "囗" shaped frame surrounding the first surface of the transparent element 20. 22, and the first shading element 31 further has a first thickness d1.

In addition, the second light-shielding element 32 in this embodiment can also be in the form of a "囗"-shaped frame, which is also disposed on the first surface 22, and the second light-shielding element 32 is the first light-shielding element 31. around. Therefore, an outer edge of the second shading element 32 is connected to one inner edge of the first shading element 31, and the second shading element 32 has a second thickness d2, and the second thickness d2 is smaller than the first thickness d1. That is to say, the first shading element 31 and the second shading element 32 together form a frame structure having an outer height and an inner low.

In this embodiment, the first shading element 31 and the second shading element 32 may be the same element having different thicknesses (in the drawings, for convenience of explanation, they are still represented by individual elements). The first shading element 31 and the second shading element 32 may be light-shielding inks or other opaque substances that can shield light from passing through. The light-shielding ink can be formed on the transparent member 20 by a current general process such as screen printing, spraying or a yellow light process.

Referring to "2A" and "2B", the first surface 22 includes a light transmitting region 25 and a light blocking region 26. In order to achieve the purpose that light can penetrate through the light-transmitting region 25 but cannot penetrate the light-shielding region 26, in the embodiment, the first light-shielding element 31 and the second light-shielding element 32 are located on the light-shielding region 26 as the light blocking light. In order to cover the portion of the second light-shielding element 32, the portion of the subsequent element 40 is located in the light-shielding region 26, and a portion of the subsequent element 40 is located in the light-transmitting region 25.

The element 40 is then located on the first surface 22 and covers at least a portion of the second light blocking element 32, while the first light blocking element 31 is located outside the subsequent element 40. That is, the entire edge of the element 40 is located between an inner edge of the first light blocking element 31 and an inner edge of the second light blocking element 32. In this embodiment, the subsequent element 40 is, for example, Optically Clear Adhesive (OCA), Super View Resin (SVR) or other optical grade clear adhesive.

In the cross-sectional view shown in Fig. 1, the distance between the inner edges of the first light blocking elements 31 on both sides is W1, and the distance between the inner edges of the second light blocking elements 32 on both sides is W2. The width WT of the element 40 in the cross-sectional view is then no greater than W1 and greater than W2.

This cross-sectional view is taken as the direction of the cross section by the first axial direction X or the second axial direction Y in the "Fig. 2A" or a combination of the first axial direction X and the second axial direction Y. Next, the component 40 has an adhesive surface 42, and the width of the adhesive surface is the above-mentioned WT. In order for the optical panel 50 to completely adhere to the adhesive surface, the width of the element 40 is not less than the width of the optical panel 50. The area of the adhesive surface is not smaller than the area of the optical panel 50 from the viewpoint of the area.

Because the first light-shielding element 31 and the second light-shielding element 32 have two different thicknesses of outer high and low inner, the height difference between the second light-shielding element 32 and the transparent element 20 can be effectively reduced, so if the subsequent element is a solid glue At the time, bubbles due to the height difference can be lowered. Moreover, since the component 40 is located within the range enclosed by the first light-shielding element 31, if the component 40 is a liquid glue, the component 40 can be blocked by the first light-shielding component 31, and the leakage of the component 40 is reduced. phenomenon.

Please refer to FIG. 3A, and FIG. 3A is a plan view showing another embodiment of the shading element of the present invention. The shape and connection relationship of the shading elements in this embodiment are similar to those described in "Fig. 2A". The first shading element 31 and the second shading element 32 are both framed, and the first shading element 31 surrounds the second shading element 32. The second shading element 32 can cover a circuit portion (not shown) of the optical panel 50.

Please refer to FIG. 3B, and FIG. 3B is a plan view showing still another embodiment of the shading element of the present invention. In this embodiment, the first light blocking member 31 is a frame, and the second light blocking member 32 includes a plurality of bumps 32' separated from each other. The bumps 32 ′ are disposed on the inner side of the frame of the first light shielding component 31 , and the bumps 32 ′ can cover the circuit portion (not shown) of the optical panel 50 to prevent the circuit components from being exposed to increase the appearance of the product. Beautiful.

Please refer to FIG. 3C, and FIG. 3C is a plan view showing still another embodiment of the light shielding device of the present invention. The first light blocking element 31 is a frame. The second shading element 32 includes a frame and a plurality of bumps 32' separated from each other. The inner side surface of the frame of the first light blocking member 31 is connected to the outer side surface of the second light blocking member 32, and the inner side surface of the second light blocking member 32 is connected to the bump 32'.

Please refer to FIG. 4, and FIG. 4 is a cross-sectional view showing an embodiment of the display device of the present invention. For the sake of simplicity of illustration and description, only necessary component parts are drawn in the drawings.

As shown, the display device 12 includes a backlight 70, a display unit 60, an optical panel 50, an illuminating element 40, a shading element 30, and a transparent element 20.

The backlight 70 is used to generate light. The backlight 70 can be a lateral or direct light source.

In this embodiment, a touch-sensitive liquid crystal display screen is taken as an example. That is, in this embodiment, the display unit 60 can be a liquid crystal display panel, and the optical panel 50 can be a touch panel.

The display unit 60 is disposed on the light exiting side of the backlight 70, and may include a plurality of pixels each having a liquid crystal cell and a thin-film transistor (TFT). The thin film transistor can receive the control signal and drive the liquid crystal unit according to the control signal to change the light transmittance of the liquid crystal unit. By controlling the signal, each liquid crystal cell can have a different light transmittance. After the light generated by the backlight 70 passes through the liquid crystal cells, images having different brightnesses can be displayed.

The optical panel 50 (touch panel) is disposed on the light emitting side of the liquid crystal display layer. The optical panel 50 can be connected to a sensor. When a touch point applies a pressure to the optical panel 50, the sensor can determine the coordinates of the touch point according to the generated capacitance value of the optical panel 50 or the change of the resistance value.

In addition to the above embodiments, the display unit 60 may be an organic light emitting diode or other display element, and the optical panel 50 may be a three-dimensional display panel. That is to say, the display unit 60 is not limited to the liquid crystal display layer, and the optical panel 50 is not limited to the touch panel.

For the transparent element 20, the light-shielding element 30, and the subsequent element 40, the structure of the present embodiment is similar to that of the embodiment described in the "Fig. 1", and the same element symbols are used corresponding to the same elements. The light shielding element 30 is equivalent to the first light blocking element 31 and the second light blocking element 32 of FIG. 1 . The transparent element 20 is disposed on one side of the subsequent element 40 with respect to the optical panel 50.

The transparent element 20 has a first surface 22. The first surface 22 includes a light transmissive region and a light blocking region 26, wherein the light blocking member 30 is located in the light shielding region 26. A portion of the follower element 40 is located in the light transmissive region and a portion of the follower element 40 is located in the light blocking region 26.

The light blocking member 30 surrounds the subsequent member 40, and the light blocking member 30 has a recessed portion 34 on one side of the opposite edge. The recessed area 34 is located at the inner edge of the light blocking element 30, and the recessed area 34 faces the optical panel 50. In other words, the shading element 30 has at least two different thicknesses that are thicker near the outer edge and thinner away from the outer edge.

The component 40 is then disposed on one side of the optical panel 50 relative to the display unit 60, and then the component 40 adheres the optical panel 50 to the transparent component 20.

Further, the display device 12 further includes a bezel 80. The frame 80 can be wrapped on the side and back of the display device 12 to prevent light generated by the backlight 70 from leaking from the side or the back. At the same time, the bezel 80 can be used to protect components such as the backlight 70, the display unit 60, the optical panel 50, and the transparent member 20.

The above describes an embodiment in which the optical module 10 is actually used in the display device 12. Therefore, the display device 12 has the same function as the optical module 10 described in the "Fig. 1", since the shading member 30 has two different thicknesses which are thicker near the outer edge and thinner from the outer edge. Therefore, the difference in height from the transparent member 20 can be effectively reduced, so that if the element is a solid glue, the bubble generated by the height difference can be lowered. Moreover, since the subsequent element 40 is located in the recessed area 34 of the light-shielding element 30, if the subsequent element 40 is a liquid glue, then the element 40 can be blocked by the light-shielding element 30, thereby reducing the phenomenon of leakage of the element 40.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

10. . . Optical module

12. . . Display device

20. . . Transparent component

twenty two. . . First surface

twenty four. . . Second surface

25. . . Light transmissive area

26. . . Shading area

30. . . Shading element

31. . . First shading element

32. . . Second shading element

32’. . . Bump

34. . . Sag area

40. . . Next component

42. . . Adhesive surface

50. . . Optical panel

60. . . Display unit

70. . . Backlight

80. . . frame

D1. . . First thickness

D2. . . Second thickness

W1. . . distance

W2. . . distance

WT. . . width

Figure 1 is a cross-sectional view of the optical module of the present invention;

"2A" and "2B" are top views of the optical module of the present invention;

"3A" is a plan view of a first embodiment of the shading element of the present invention;

"3B" is a top view of a second embodiment of the shading element of the present invention;

"3C" is a top view of a third embodiment of the shading element of the present invention;

Fig. 4 is a cross-sectional view showing an embodiment of a display device of the present invention.

10. . . Optical module

20. . . Transparent component

twenty two. . . First surface

twenty four. . . Second surface

31. . . First shading element

32. . . Second shading element

40. . . Next component

42. . . Adhesive surface

50. . . Optical panel

D1. . . First thickness

D2. . . Second thickness

W1. . . distance

W2. . . distance

WT. . . width

Claims (16)

An optical module for connecting to an optical panel, comprising: a transparent component having a first surface; a first light shielding component disposed on an outer edge of the first surface, the first light shielding component having a first a second light-shielding element is disposed on the first surface and surrounded by the first light-shielding element, an outer side surface of the second light-shielding element is connected to one inner side of the first light-shielding element, and the second The light shielding member has a second thickness, the second thickness is smaller than the first thickness; and an adhesive element is located on the first surface and is in contact with the optical panel and covers at least a portion of the second light shielding member. The element then has a width that is no greater than the distance between the opposite inner edges of the first opacifying element. The optical module of claim 1, wherein the adhesive component forms an adhesive surface having an area of not less than an area of the optical panel. The optical module of claim 1, wherein the second shading element comprises a frame. The optical module of claim 1 or 3, wherein the second shading element comprises a plurality of bumps separated from each other. The optical module of claim 1, wherein the adhesive element comprises an Optically Clear Adhesive (OCA) or a Super View Resin (SVR). The optical module of claim 1, wherein the first shading element and the second shading element comprise a shading ink. The optical module of claim 1, wherein the transparent component comprises a glass substrate or a plastic substrate. The optical module of claim 1, wherein the optical panel comprises a touch panel or a three-dimensional display panel. A display device comprising: a backlight source for generating a light; a display unit for receiving the light and displaying a picture; an optical panel disposed on one side of the display unit; and a subsequent component disposed on the optical panel On one side of the display unit; a light shielding member surrounding the rear member, and a portion of the light shielding member is covered by the rear member, and the light shielding member has a recessed portion on one side of the opposite edge, the rear member An edge is located in the recessed region; and a transparent member is disposed on a side of the rear member relative to the optical panel, the transparent member having a first surface on a side of the adhesive member, the first surface including a light-transmitting region and a light-shielding region, the light-shielding member is located in the light-shielding region, and a portion of the adhesive element is located in the light-transmitting region. The display device of claim 9, wherein the adhesive element constitutes an adhesive surface having an area of not less than an area of the optical panel. The display device of claim 9, wherein the shading element comprises a frame. The display device of claim 9 or 11, wherein the shading element comprises a plurality of bumps separated from each other, the bumps being located in the recessed area. The display device of claim 9, wherein the adhesive element comprises an Optically Clear Adhesive (OCA) or a Super View Resin (SVR). The display device of claim 9, wherein the shading element comprises a shading ink. The display device of claim 9, wherein the transparent component comprises a glass substrate or a plastic substrate. The display device of claim 9, wherein the optical panel comprises a touch panel or a three-dimensional display panel.