TWI669647B - Touch panel with lighting function - Google Patents

Abstract

A touch panel with a light emitting function includes a touch sensing board, a first light guiding board, a second light guiding board, a first lighting unit, a second lighting unit and a controller. The touch sensor panel has light transmissivity. The first light guide plate is disposed under the touch sensor board and has a first light incident area and a first shadow area. The second light guide plate is overlapped with the first light guide plate. The second light guide plate has a second light incident region and a second light shielding region, the second light incident region is adjacent to the first shielding region, and the second shielding region is adjacent to the first light incident region. The first light emitting unit is aligned with the first light incident region and the second light shielding region. The second light emitting unit is aligned with the first shielding area and the second light entering area. The controller can selectively turn on or off the first lighting unit and the second lighting unit.

Description

Touchpad with lighting function

The invention provides a touch panel, in particular to a touch panel with a light emitting function.

The notebook uses a keyboard, mouse and trackpad as input interfaces. The touchpad is placed on the system side of the notebook, adjacent to the physical keyboard. The uppermost surface of the conventional touch panel is usually a monochromatic opaque sensor board, and the user's finger slides on the opaque sensor board to manipulate the mouse cursor. The monochromatic opaque sensor board appears to be relatively monotonous and does not meet the current trend of consumer electronics. The new notebook computer can use the light-transmitting material to make the touch sensor board, and the light-emitting diode is provided at the edge of the light-sensitive sensor board to provide illumination; however, the color touch sensor board can only provide a single light-emitting diode. The color is still not enough to meet the consumer's design and appearance requirements for the notebook.

The present invention provides a touch panel having a light emitting function to solve the above problems.

The invention relates to a touch panel with a light-emitting function, comprising a touch-sensing plate, a first light guide plate, a second light guide plate, a first light-emitting unit, a second light-emitting unit and a Controller. The touch sensor panel has light transmissivity. The first light guide plate is disposed under the touch sensor board and has a first light incident area and a first shadow area. The second light guide plate is overlapped with the first light guide plate. The second light guide plate has a second light entrance area and a second shadow area adjacent to the second light entrance area The first shielding area is adjacent to the first light entering area. The first light emitting unit is aligned with the first light incident region and the second light shielding region. The second light emitting unit is aligned with the first shielding area and the second light entering area. The controller electrically connects the first lighting unit and the second lighting unit. The controller can selectively turn on or off the first lighting unit and the second lighting unit.

The touch panel further includes a third light guide plate overlapping the first light guide plate and the second light guide plate. The third light guide plate has a third shielding area adjacent to the first light entrance area and the second shadow area, or the second light entrance area and the first shadow area. The controller activates the first lighting unit according to one click signal of the click area, and the symbol of the symbol corresponding to the click area is illuminated by the first light entering area.

The touch panel of the present invention stacks a plurality of light guide layer layers beside the light emitting unit. The light generated by the light unit is projected to the side of all the light guide plates. Therefore, each of the light guide plates is respectively provided with a light entrance area and a shadow area on the side thereof, and the light entrance area and the shadow area of the different light guide plates are staggered. The light of each of the light-emitting units is only projected into one of the light guide plates, so that it is possible to determine how to light the light guide plates by controlling the opening or closing of the light-emitting units. For example, in one application mode, the touch panel can randomly select several light guiding blocks of the light guide plate to perform the lighting special effects, and the lighting effects of the light guiding blocks can flash or change the color with time; In the application mode, the touch sensor board is used to detect which click area the finger touches, and then the light guide block corresponding to the click area can start to emit light; or the touch panel can illuminate the light guide plate with symbolic marks. As a pressing prompt, after the user clicks on any symbol notch, the touch panel can drive the light-emitting function of the light-guiding block corresponding to the position of the symbol to start to emit light or turn off the symbol notch.

10, 10'‧‧‧ trackpad

10A, 10B, 10C, 10D‧‧‧ touchpad

12‧‧‧Touch sensor board

14‧‧‧First light guide

141‧‧‧First light zone

142‧‧‧First shelter area

143‧‧ ‧ fully shaded area

16‧‧‧Second light guide

161‧‧‧Second entrance zone

162‧‧‧second shaded area

18‧‧‧First lighting unit

20‧‧‧second lighting unit

22‧‧‧ Controller

24‧‧‧ boards

26‧‧‧Click area

28‧‧‧ symbol scoring

30‧‧‧ Third light guide

301‧‧‧ Third light zone

302‧‧‧ Third shelter area

32‧‧‧Full shaded area

34‧‧‧Lighting block

36‧‧‧3rd lighting unit

38‧‧‧fourth illumination unit

1 is an exploded view of components of a touch panel according to a first embodiment of the present invention.

2 is a perspective view of a touch panel according to a first embodiment of the present invention.

Figure 3 is an exploded view of the components of the touch panel of the second embodiment of the present invention.

4 is a schematic view of a touch panel of a second embodiment of the present invention at a certain angle of view.

Figure 5 is a schematic view of the touch panel of the second embodiment of the present invention in another view.

Figure 6 is an exploded view of the components of the touch panel of the third embodiment of the present invention.

Figure 7 is an exploded view of the components of the touch panel of the fourth embodiment of the present invention.

Figure 8 is an exploded view of the components of the touch panel of the fifth embodiment of the present invention.

Figure 9 is an exploded view of the components of the touch panel of the sixth embodiment of the present invention.

Please refer to FIG. 1. FIG. 1 is an exploded view of components of the touch panel 10 according to the first embodiment of the present invention. The touch panel 10 can include a touch sensing board 12 , a first light guide board 14 , a second light guide board 16 , a first lighting unit 18 , a second lighting unit 20 , and a controller 22 . The touch sensing board 12 has a light transmissive property and is an area where the user touches the operation. The first light guide plate 14 can have a first light incident region 141 and a first light shielding region 142 disposed under the touch sensing plate 12 . The second light guide plate 16 is overlapped with the first light guide plate 14 . The second light guide plate 16 may have a second light incident region 161 and a second light shielding region 162. The second light incident region 161 is adjacent to the first light shielding region 142, and the second shielding region 162 is adjacent to the first light incident region 141. The first lighting unit 18, the second lighting unit 20, and the controller 22 are disposed on the circuit board 24. The controller 22 is electrically connected to the first light emitting unit 18 and the second light emitting unit 20, and can selectively turn on or off the first light emitting unit 18 and the second light emitting unit 20, so that the touch panel 10 provides a color changing visual effect.

In the first embodiment, the first light guide plate 14 can selectively have a plurality of symbol scores 28, The touch sensing board 12 divides a plurality of click areas 26 accordingly. The symbol score 28 can be selected from one of Arabic numerals, English letters and punctuation marks, or a combination thereof. The position and distribution of the click area 26 corresponds to the position and distribution of the symbol scores 28, meaning that the click area 26 is the same as the number of symbol scores 28. Please refer to FIG. 2, which is a block diagram of the touch panel 10 according to the first embodiment of the present invention. The first light incident region 141 and the first light shielding region 142 are disposed adjacent to each other on the same side of the first light guide plate 14 . The second light incident region 161 and the second light shielding region 162 are disposed adjacent to each other on the same side of the second light guide plate 16 . The first light emitting unit 18 is aligned with the first light incident region 141 and the second light shielding region 162, and the second light emitting unit 20 is aligned with the first light shielding region 142 and the second light incident region 161.

One or both of the first light emitting unit 18 and the second light emitting unit 20 may emit light of a single color, or may be composed of a plurality of light emitting diodes to be arbitrarily switched to emit different color lights. For example, the first light emitting unit 18 or the second light emitting unit 20 may be a single light emitting diode of red light, or green light, or blue light, and may also be composed of red, green, and blue light emitting diodes. When the light emitting unit 18 or 20 is composed of a plurality of light emitting diodes, the controller 22 may only emit a single light emitting diode, alternately emit a plurality of light emitting diodes, or simultaneously generate a plurality of light emitting diodes. Provide a variety of color changing effects.

The number of the first light emitting unit 18 and the second light emitting unit 20 depends on the number and arrangement of the light incident area and the shadow area of the light guide plate. Each of the first light-emitting units 18 can be aligned with one of the click regions 26 of the touch-sensing panel 12 and the associated light-in and light-blocking regions; the first light-emitting unit 18 is disposed adjacent to the second light-emitting unit 20, and the second light-emitting unit Unit 20 aligns the same click zone 26 with another set of associated light zones and shaded zones. When the first light-emitting unit 18 is emitted, the first light-input region 141 receives the light to make the first light guide plate 14 bright, and the second light guide plate 16 does not illuminate because the second shielding region 162 blocks the light. When the second illuminating unit 20 is activated, the first shielding area 142 blocks the light, so that the first light guiding plate 14 does not illuminate, and the second light receiving area 161 receives the light to make the second light guiding plate 16 illuminate. It can be seen that the controller 22 only needs to interleave or simultaneously activate the first lighting unit 18 Different from the second lighting unit 20, different visual effects can be caused.

As previously mentioned, the first light guide plate 14 can have a plurality of symbol scores 28, and the second light guide plate 16 can be plain-surface illuminated or divided into a plurality of light-guiding blocks 34. In general, the touchpad 10 can be applied to a notebook computer as a touch input interface on the system side. If the second light guide plate 16 is a plain surface light-emitting device, when the user does not click the touch panel 10, the controller 22 can activate the second light-emitting unit 20, so that the touch-sensitive sensor board 12 can see uniform light on the whole surface; The controller 22 can activate the first lighting unit 18 according to the click signal generated by the click area 26, and illuminate the symbol nick corresponding to the click area 26 through the first light entering area 141. 28. For example, when the second light guide plate 16 is divided into a plurality of light guide blocks 34, when the user does not click on the touch panel 10, the controller 22 can selectively activate one or several light emitting units 20 to make the touch sensor board 12 face or The partition reveals uniform brightness; when the user clicks on any of the click areas 26, the controller 22 activates the first lighting unit 18 according to the click signal generated by the click area 26 to illuminate the symbol score 28 corresponding to the click area 26.

Please refer to FIG. 3 to FIG. 5 , FIG. 3 is an exploded view of the components of the touch panel 10 ′ according to the second embodiment of the present invention, and FIG. 4 is a second embodiment of the touch panel 10 ′ according to the second embodiment of the present invention. FIG. 5 is a schematic view showing the touch panel 10' of the second embodiment of the present invention in another perspective. In the second embodiment, elements having the same reference numerals as those in the first embodiment have the same structures and functions, and the description thereof will not be repeated here. The difference between the two embodiments is that the touch panel 10' can further include a third light guide plate 30 overlapping the first light guide plate 14 and the second light guide plate 16. One side of the first light guide plate 14 is alternately disposed with the first light incident region 141 and the first shielding region 142, and the other side is provided with a full shielding region 143. The second light incident region 161 and the second light shielding region 162 are alternately disposed on both sides of the second light guide plate 16 . One side of the third light guide plate 30 has a full shielding area 32, adjacent to the first light incident area 141 and the second shadow area 162, or the second light entrance area 161 and the first shadow area 142. The other side of the third light guide plate 30 has a third light incident region 301 and a third light shielding region 302. One side of the circuit board 24 is provided with a first light emitting unit 18 and a second The light emitting unit 20 is provided with a third light emitting unit 36 and a fourth light emitting unit 38 on the other side.

In the second embodiment, the first light guide plate 14 has a plurality of symbol scores 28, the second light guide plate 16 is composed of a plurality of light guide blocks 34, and the third light guide plate 30 is a plain surface light, and the touch sensor plate 12 is divided. For a plurality of hit areas 26 . The number of light guiding blocks 34 is the same as the number of click regions 26 and symbol scores 28, and the position of the light guiding blocks 34 corresponds to the position of each symbol score 28 and each click region 26.

The trackpad 10' provides a more diverse visual effect. When the first light-emitting unit 18 is activated, the symbol score 28 of the first light guide plate 14 can emit bright light due to the first light-incident region 141, and the second light guide plate 16 does not emit light due to the second light-shielding region 162, and the third light guide plate 30 is The full shadow area 32 does not emit light. When the second light-emitting unit 20 is activated, the first light guide plate 14 does not emit light due to the first shielding region 142, and the light guiding block 34 of the second light guide plate 16 can emit bright light due to the second light-incident region 161, and the third light guide plate 30 Since the full masking area 32 does not emit light. When the third light-emitting unit 36 is activated, the first light guide plate 14 does not emit light due to the full shielding area 143, and the second light guide plate 16 does not emit light due to the second shielding area 162. The third light guide plate 30 can be replaced by the third light-incident area 301. Give a light. When the fourth light-emitting unit 38 is activated, the first light guide plate 14 does not emit light due to the full shielding area 143, the second light guide plate 16 can emit bright light due to the second light-incident area 161, and the third light-guiding plate 30 is not covered by the third shielding area 302. Will shine.

Please refer to FIG. 6 to FIG. 9 , FIG. 6 is an exploded view of components of the touch panel 10A according to the third embodiment of the present invention, and FIG. 7 is an exploded view of components of the touch panel 10B according to the fourth embodiment of the present invention. 8 is an exploded view of components of the touch panel 10C according to the fifth embodiment of the present invention, and FIG. 9 is an exploded view of components of the touch panel 10D according to the sixth embodiment of the present invention. In the embodiments, elements having the same reference numerals as in the previous embodiments have the same structures and functions, and the description thereof will not be repeated.

As shown in FIG. 6, the first light guide plate 14 of the touch panel 10A may be composed of a plurality of light guiding blocks 34. The second light guide plate 16 provides plain surface light emitting characteristics. As the first light emitting unit 18 and the second light emitting unit 20 are turned on or off, the first light guide plate 14 and the second light guide plate 16 may alternately or simultaneously emit light. As shown in FIG. 7, the first light guide plate 14 of the touch panel 10B is composed of a plurality of light guiding blocks 34, the second light guide plate 16 provides a plain surface light emitting characteristic, and the third light guide plate 30 has a plurality of symbol scores 28 The first light-emitting unit 18, the second light-emitting unit 20, and the fourth light-emitting unit 36 and the fourth light-emitting unit 38 are turned on or off, so that the first light guide plate 14, the second light guide plate 16, and the third light guide plate 30 may be alternately or simultaneously Glowing.

As shown in FIG. 8, the first light guide plate 14 of the touch panel 10C has a plurality of symbol scores 28, and the second light guide plate 16 provides plain surface illumination characteristics. As the first light emitting unit 18 and the second light emitting unit 20 are turned on or off, the first light guide plate 14 and the second light guide plate 16 may alternately or simultaneously emit light. As shown in FIG. 9, the first light guide plate 14 of the touch panel 10D has a plurality of symbol scores 28, the second light guide plate 16 provides plain surface illumination characteristics, and the third light guide plate 30 is composed of a plurality of light guide blocks 34. The first light-emitting unit 18, the second light-emitting unit 20, and the fourth light-emitting unit 36 and the fourth light-emitting unit 38 are turned on or off, so that the first light guide plate 14, the second light guide plate 16, and the third light guide plate 30 may be alternately or simultaneously Glowing.

In summary, the touch panel of the present invention stacks a plurality of light guide layer layers beside the light emitting unit. The light generated by the light unit is projected to the side of all the light guide plates. Therefore, each of the light guide plates is respectively provided with a light entrance area and a shadow area on the side thereof, and the light entrance area and the shadow area of the different light guide plates are staggered. The light of each of the light-emitting units is only projected into one of the light guide plates, so that it is possible to determine how to light the light guide plates by controlling the opening or closing of the light-emitting units. For example, in one application mode, the touch panel can randomly select several light guiding blocks of the light guide plate to perform the lighting special effects, and the lighting effects of the light guiding blocks can flash or change the color with time; In the application mode, the touch sensor board is used to detect which click area the finger touches, and then the light guide block corresponding to the click area can start to emit light; or the touch panel can illuminate the light guide plate with symbolic marks. As a pressing prompt, the user points After hitting any of the symbol scores, the touchpad can drive the light-emitting function of the light-guiding block corresponding to the position of the symbol to start to emit light or turn off the symbolic mark.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

Claims (12)

A touch panel having a light-emitting function, comprising: a touch-sensing plate having light transmissivity; a first light guide plate disposed under the touch-sensing plate, wherein one side of the first light guide plate is staggered a first light-input region and a first masking region; a second light guide plate overlapping the first light guide plate, one side of the second light guide plate having a second light-input region and a second staggered arrangement a shielding area, the second light incident area is adjacent to the first shielding area, and the second shielding area is adjacent to the first light entering area; a first light emitting unit is aligned with the first light incident area and the second light shielding area a second lighting unit disposed adjacent to the first lighting unit to align the first shielding area and the second light entering area; and a controller electrically connecting the first lighting unit and the second lighting unit, The controller can selectively turn on or off the first lighting unit and the second lighting unit. The touch panel of claim 1, wherein the first light guide plate has at least one symbol score, and the touch sensor board defines at least one click area, and one of the click areas corresponds to the symbol score. The touch panel of claim 2, wherein the controller activates the first lighting unit according to a click signal of the click area, and the symbol of the symbol corresponding to the click area is illuminated by the first light entrance area. The touch panel of claim 1, wherein the first light incident region is disposed adjacent to the first light shielding plate on the same side of the first light guide plate. The touch panel of claim 1, further comprising: a third light guide plate overlapping the first light guide plate and the second light guide plate, the third light guide plate having a third shielding area adjacent to the a first light entrance zone and the second shadow zone, or the second light entrance zone and the first shadow zone. The touch panel of claim 5, wherein the first light guide plate has a plurality of symbol scores, and the second light guide plate is composed of a plurality of light guide blocks. The touch panel of claim 6, wherein the third light guide plate provides a plain surface illumination characteristic. The touch panel of claim 6, wherein the plurality of light guiding blocks respectively correspond to the plurality of symbol scores. The touch panel of claim 5, wherein the first light guide plate is composed of a plurality of light guide blocks, and the second light guide plate provides a plain surface light emitting characteristic. The touch panel of claim 9, wherein the third light guide plate has a plurality of symbol scores. The touch panel of claim 5, wherein the first light guide plate has a plurality of symbol scores, and the second light guide plate provides a plain surface light emitting characteristic. The touch panel of claim 11, wherein the third light guide plate is composed of a plurality of light guiding blocks.