TWI804327B - Display device - Google Patents

Abstract

A display device includes a display panel, a turntable, an incident light source, a sensing circuit, and a processor. The turntable includes a scale part. The scale part includes a first scale area, a second scale area, and a third scale area. Each of the first scale area, the second scale area, and the third scale area does not overlap. The incident light source is configured to generate a sensing signal to the first scale area, the second scale area, and the third scale area so as to generate a first light intensity of the first scale area, a second light intensity of the second scale area, and a third light intensity of the third scale area. The sensing circuit is configured to receive the first light intensity, the second light intensity, and the third light intensity. The processor is coupled to the sensing circuit, and is configured to generate a control signal so as to determine whether a rotation of the turntable is clockwise direction or counterclockwise direction.

Description

display device

This case involves a display device. Specifically, this case relates to a display device equipped with a turntable.

Existing display devices generally have two layers of turntables. The two-layer turntable occupies a certain proportion of the frame of the display device, so that the screen-to-body ratio of the display device is very low.

Then, the two-layer turntable requires two sensing circuits for reading, which makes the wiring design of the frame of the display device challenging. The light sensors of the two sensing circuits have non-uniformity, and the light-receiving ranges of the light sensors of the two sensing circuits may overlap each other, causing misjudgment in the reading process.

Therefore, the above-mentioned technology still has many defects, and practitioners in the field need to develop other suitable circuit designs of the display device with the turntable.

One aspect of the present case relates to a display device. The display device includes a display panel, a turntable, an incident light source, a sensing circuit and a processor. The display panel is used for displaying images. The turntable is coupled to the display panel and includes a scale portion. The scale part includes a first scale area, a second scale area and a third scale area. The first scale area, the second scale area and the third scale area do not overlap. The incident light source is coupled to the display panel and is used to generate detection signals to the first scale area, the second scale area and the third scale area to generate the first light intensity of the first scale area and the second light intensity of the second scale area. Light intensity and the third light intensity of the third scale area. The sensing circuit is arranged in the display panel and used for receiving the first light intensity, the second light intensity and the third light intensity. The processor is arranged in the display panel and coupled to the sensing circuit, and generates control signals according to the first light intensity, the second light intensity and the third light intensity, so as to judge whether the turning direction of the turntable is clockwise or counterclockwise turn around.

Another aspect of the present case relates to a display device. The display device includes a display panel, a turntable, an incident light source, a sensing circuit and a processor. The display panel is used for displaying images. The turntable is coupled to the display panel and includes a scale portion. The scale part includes a first scale area, a second scale area and a third scale area. The first scale area, the second scale area and the third scale area do not overlap. The incident light source is coupled to the display panel and is used to generate detection signals to the first scale area, the second scale area and the third scale area to generate the first luminous flux in the first scale area and the second luminous flux in the second scale area And the third luminous flux in the third scale area. The sensing circuit is coupled to the display panel and used for receiving the first luminous flux, the second luminous flux and the third luminous flux. The processor is arranged in the display panel, coupled to the sensing circuit, and generates control signals according to the first luminous flux, the second luminous flux and the third luminous flux, so as to determine whether the turning direction of the turntable is clockwise or counterclockwise.

The following will clearly illustrate the spirit of this case with drawings and detailed descriptions. Anyone with common knowledge in the technical field can change and modify the technology taught in this case after understanding the embodiment of this case. It does not depart from the spirit of this case. Spirit and scope.

The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present case. Singular forms such as "a", "the", "the", "this" and "the", as used herein, also include plural forms.

"Includes", "including", "has", "containing" and so on used in this article are all open terms, meaning including but not limited to.

Regarding the terms (terms) used in this article, unless otherwise specified, generally have the ordinary meaning of each term used in this field, in the content of this case and in the special content. Certain terms used to describe the subject matter are discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance in describing the subject matter.

In some embodiments, in order to make the structure of the display device 100 easy to understand, please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic side view of a circuit block of a display device 100 according to some embodiments of the present invention. FIG. 2 is a schematic top view of a display device 100 according to some embodiments of the present invention. In some embodiments, please refer to FIG. 1 , the display device 100 can be a watch, a clock, a knob for a car, or a knob of any device, but is not limited to the items listed in this embodiment.

In some embodiments, referring to FIG. 1 , the display device 100 includes a display panel 110 , a turntable 120 , an incident light source 130 , a sensing circuit 140 and a processor 150 .

In some embodiments, the display panel 110 is used to display images. The turntable 120 is coupled to the display panel 110 and includes a scale portion 121 .

Next, please refer to FIG. 1 and FIG. 2 together. The scale portion 121 includes a first scale area A11 , a second scale area A12 and a third scale area A13 . The first scale area A11 , the second scale area A12 and the third scale area A13 do not overlap. The incident light source 130 is coupled to the display panel 110 and used to generate the detection signal L1 to the first scale area A11, the second scale area A12 and the third scale area A13 to generate the first light intensity of the first scale area A11 , the second light intensity of the second scale area A12 and the third light intensity of the third scale area A13.

Moreover, the sensing circuit 140 is disposed in the display panel 110 and used for receiving the first light intensity, the second light intensity and the third light intensity. The processor 150 is disposed in the display panel 110 and is coupled to the sensing circuit 140, and generates control signals according to the first light intensity, the second light intensity and the third light intensity, so as to determine that the turning direction of the turntable 120 is clockwise. CW or CCW for counterclockwise rotation.

It should be noted that the first scale area A11 , the second scale area A12 and the third scale area A13 in FIG. 2 are shown as different dots. Different dots represent scale areas using special materials and ink graphics, so that different scale areas have different light reflectivity or different light transmittance. The processor 150 judges whether the turntable 120 is in the clockwise rotation direction CW or the counterclockwise rotation direction CCW through the sensing circuit 140 to read the order of the scale areas.

It should be further explained that the method adopted in the embodiment of FIG. 1 is that the scale regions have different light reflectances. In some embodiments, the reflectivity of the third scale region A13 is greater than the reflectivity of the second scale region A12. The reflectivity of the second scale region A12 is greater than the reflectivity of the first scale region A11. Therefore, the first light intensity (ie, reflected light intensity) of the first scale area A11 is smaller than the second light intensity (ie, reflected light intensity) of the second scale area A12 . The second light intensity (ie, reflected light intensity) of the second scale area A11 is smaller than the third light intensity (ie, reflected light intensity) of the second scale area A12 . In some embodiments, the order of reflectivity of the first scale area A11 , the second scale area A12 and the third scale area A13 can be designed according to actual requirements, and is not limited to the implementation of this case.

In some embodiments, please refer to FIG. 1 , the display panel 110 is structurally coupled to the turntable 120 . As shown in FIG. 1 , there is a gap between the turntable 120 and the display panel 110 to facilitate the rotation of the turntable 120 .

In some embodiments, please refer to FIG. 1 , the incident light source 130 and the sensing circuit 140 are both coupled to the processor 150 , and the coupling manner can be electrical connection or wireless communication. It should be noted that, in order to avoid the diagram being too complicated, the diagram does not show the connection relationship.

In some embodiments, the incident light source 130 may be a light-emitting diode (LED)

In some embodiments, referring to FIG. 1 and FIG. 2 , the position of the sensing circuit 140 is fixed at the 12 o'clock position of the display device 100 . Next, the order in which the processor 150 reads the scale portion 121 of the turntable 120 through the sensing circuit 140 is the first light intensity in the first scale area A11, the second light intensity in the second scale area A12, and the light intensity in the third scale area A13. Third light intensity. Therefore, the processor 150 can determine that the rotation of the turntable 120 is in the clockwise direction CW.

Furthermore, the order in which the processor 150 reads the scale portion 121 of the turntable 120 through the sensing circuit 140 is the third light intensity of the third scale area A13, the second light intensity of the second scale area A12, and the first scale area A11. the first light intensity. Therefore, the processor 150 can determine that the rotation direction of the turntable 120 is in the counterclockwise rotation direction CCW. It should be noted that, the first scale area A11 , the second scale area A12 and the third scale area A13 can be regarded as a unit reading period.

In some embodiments, the areas of the first scale area A11 , the second scale area A12 and the third scale area A13 are all the same. The central angles of the second scale area A12 and the third scale area A13 are the same as the central angle _θ1 corresponding to the first scale area A12. In some embodiments, the minimum angle of the central angle θ ₁ of the scale area may be 10°. The threshold angle of the above unit read cycle is 30º.

In some embodiments, referring to FIG. 1 , the incident light source 130 is a light emitting diode. The light emitting diode (namely the incident light source 130 ) is arranged in the display panel 110 , and the light emitting diode (namely the incident light source 130 ), the sensing circuit 140 , and the scale portion 121 of the turntable 120 overlap in the vertical projection direction. When the scale portion 121 of the turntable 120 is located on the sensing circuit 140 and the light emitting diode, the scale portion 121 of the turntable 120 is used to reflect the detection signal L1 to the sensing circuit 140 (ie, the reflected light signal RL1 ).

In some embodiments, through the design of the display device 100 in this case, the sensing circuit 140 and the surrounding wiring (not shown in the figure) can be made close to the display area of the display device 100 (that is, the area not covered by the turntable 120), so as to The frame of the display device 100 is reduced.

FIG. 3 is a schematic diagram of an enlarged area Z of a display device according to some embodiments of the present application. The enlarged area Z in Figure 3 corresponds to the area marked in the enlarged area Z in Figure 2.

In some embodiments, please refer to FIG. 2 and FIG. 3 , the enlarged area Z shows the peripheral circuit structure of the sensor 140 . The sensor 140 is located substantially in the center of the enlarged area Z. The number H1 of the peripheral circuit structures of the sensor 140 may be 7 rows. It should be noted that one row is a row including a light-emitting diode and a row without a light-emitting diode. In some embodiments, a row may be 78 micrometers (µm) wide.

Next, the incident light source 130 includes a plurality of light emitting diodes. A plurality of light-emitting diodes (for example: light-emitting diode 131 , light-emitting diode 132 , and light-emitting diode 133 ) form a rhombus with the sensor 140 as the center and are arranged outward. A plurality of light emitting diodes (for example: light emitting diode 131 , light emitting diode 132 , light emitting diode 133 ) are used to generate detection signals. The sensor 140 is used for receiving signals reflected or transmitted by detection signals of a plurality of light emitting diodes (for example: the light emitting diode 131 , the light emitting diode 132 , and the light emitting diode 133 ).

FIG. 4 is a schematic structural diagram of a sensing circuit 140 of a display device according to some embodiments of the present invention. FIG. 4 is an enlarged view of the sensing circuit 140 in FIG. 3 .

In some embodiments, please refer to FIG. 4 , the sensing circuit 140 includes a first transistor T1 , a second transistor T2 , a third transistor T3 and a light sensor SRO. Please count from the top and right side of the components in the figure as the first end. The first transistor T1 includes a first terminal, a second terminal and a control terminal (ie, a gate terminal). The first end of the first transistor T1 is coupled to the first system high voltage FVDD′. The second end of the first transistor T1 is coupled to the node G. The control terminal of the first transistor T1 is used for resetting in response to the reset signal S _RESET .

The second transistor T2 includes a first terminal, a second terminal and a control terminal (ie, a gate terminal). The first end of the second transistor T2 is coupled to the second system high voltage FVDD. The second terminal of the second transistor T2 is coupled to the third transistor T3. The control terminal of the second transistor T2 is coupled to the node G.

The third transistor T3 includes a first terminal, a second terminal and a control terminal (ie, a gate terminal). The first end of the third transistor T3 is coupled to the readout line Column readout. The second terminal of the third transistor T3 is coupled to the second transistor T2. The control end of the third transistor T3 is used to read the signal in response to the reset signal S _READ , so as to transmit it to the read line Column readout.

The light sensor SRO includes a first terminal and a second terminal. The first end of the light sensor SRO is coupled to the node G. The second end of the light sensor SRO is coupled to the system low voltage FVSS.

FIG. 5 is a schematic side view of a circuit block of a display device 100A according to some embodiments of the present invention. In some embodiments, compared with Figure 1, the difference between Figure 1 and Figure 5 lies in the change of the position of the circuit structure and the change of the material of the scale part of the turntable, and the rest of the structure is similar to the embodiment of Figure 1, here I won't go into details.

In some embodiments, referring to FIG. 5 , the incident light source 130A is a backlight. The backlight (ie, the incident light source 130A), the sensing circuit 140A, and the scale portion 121A of the turntable 120A overlap in the vertical projection direction. The scale portion 121A of the turntable 120A is used to transmit the detection signal L2 to the sensing circuit 140A. It should be noted that, please refer to FIG. 2 again, the scale part 121A of the turntable 120A adopts the method that the scale part 121A is a light-transmitting material and passes through a special ink pattern, so that the scale areas have different transmittances.

FIG. 6 is a schematic side view of a circuit block of a display device according to some embodiments of the present invention. In some embodiments, compared with FIG. 1 , the difference between FIG. 1 and FIG. 6 lies in the change of the position of the circuit structure, and the rest of the structures are similar to the embodiment in FIG. 1 , which will not be repeated here.

In some embodiments, incident light source 130B is a light emitting diode. The light emitting diode (ie, the incident light source 130B) is disposed in the display panel 110B. When the scale portion 121B of the turntable 120B is located under the sensing circuit 140B and the light-emitting diode (i.e., the incident light source 130B), the scale portion 120B of the turntable 120B is used to reflect the detection signal L3 to the sensing circuit 140B, and by The touch electrodes TP of the display device 100B shield part of the reflected light signal RL3 of the detection signal L3.

In some embodiments, in order to make the structure of the display device 200 easy to understand, please refer to FIG. 7 and FIG. 8 together. FIG. 7 is a schematic side view of a circuit block of a display device 200 according to some embodiments of the present invention. FIG. 8 is a schematic top view of a display device 200 according to some embodiments of the present invention.

In some embodiments, please refer to Figure 7. Compared with the embodiment in Figure 1, the display device 200 can also be a watch, a clock, a car knob or a knob of any device, but not the items listed in this embodiment limit.

In some embodiments, please refer to FIG. 7 , the display device 200 includes a display panel 210 , a turntable 220 , an incident light source 230 , a sensing circuit 240 and a processor 250 .

In some embodiments, the display panel 210 is used to display images. The turntable 220 is coupled to the display panel 210 and includes a scale portion 221 .

Next, please refer to Fig. 7 and Fig. 8 together, the scale portion 221 includes a first scale area (for example: a first scale area A21 and a first scale area A24), a second scale area (for example: a second scale area Scale area A22 and second scale area A25) and a third scale area (for example: third scale area A23 and third scale area A26). The first scale area, the second scale area and the third scale area do not overlap. The incident light source 230 is coupled to the display panel 210, and is used to generate the detection signal L4 to the first scale area, the second scale area and the third scale area to generate the first scale area (for example: the first scale area A21) The first luminous flux in the second scale area (for example: the second scale area A22 ) and the third luminous flux in the third scale area (for example: the third scale area A23 ). The sensing circuit 240 is coupled to the display panel 210 and used for receiving the first luminous flux, the second luminous flux and the third luminous flux. The processor 250 is disposed in the display panel 210, coupled to the sensing circuit 240, and generates control signals according to the first luminous flux, the second luminous flux and the third luminous flux, so as to determine whether the turning direction of the turntable 220 is clockwise or counterclockwise. turn around. It should be noted that the definition of luminous flux is the total light energy emitted by the light source or absorbed by the illuminated object per unit time.

In some embodiments, the first scale area (for example: the first scale area A21 and the first scale area A24), the second scale area (for example: the second scale area A22 and the second scale area A25) and the second scale area The areas of the three scale areas (for example: the third scale area A23 and the third scale area A26 ) are all different in area.

In some embodiments, please refer to FIG. 8 , the central angle of the unit area of the scale area is θ ₂ . The central angle θ ₂ can be 10°. In some embodiments, the central angle of the first scale area (for example: the first scale area A21 and the first scale area A24 ) is θ ₂ .

In some embodiments, the central angle of the second scale area (for example: the second scale area A22 and the second scale area A25 ) is 2θ ₂ .

In some embodiments, the central angle of the third scale area (for example: the third scale area A23 and the third scale area A26 ) is 3θ ₂ .

In some embodiments, the area of the second scale area (for example: the second scale area A22 and the second scale area A25) is about the same as the area of the first scale area (for example: the first scale area A21 and the first scale area A24 ) twice the area. The area of the third scale area (for example: the third scale area A23 and the third scale area A26) is about three times the area of the first scale area (for example: the first scale area A21 and the first scale area A24) .

In some embodiments, the reflectance or transmittance of the first scale area A21 is opposite to the reflectance or transmittance of the first scale area A24 .

In some embodiments, the reflectance or transmittance of the second scale area A22 is opposite to the reflectance or transmittance of the second scale area A25 .

In some embodiments, the reflectance or transmittance of the third scale area A23 is opposite to the reflectance or transmittance of the third scale area A26 .

In some embodiments, please refer to Fig. 5 to Fig. 7, the structure of the embodiment in Fig. 7 can also be changed as the structure of the embodiment in Fig. 5 and the embodiment in Fig. 6, and the details are in the above paragraphs Explanation will not be repeated here.

In some embodiments, please refer to FIG. 7 and FIG. 8 , the position of the sensing circuit 240 is fixed at the 12 o'clock position of the display device 200 . Next, the processor 250 reads the scale portion 221 of the turntable 220 through the sensing circuit 240 in the order of the first luminous flux in the first scale area A21, the second luminous flux in the second scale area A22, and the third luminous flux in the third scale area A13. . Therefore, the processor 250 can determine that the rotation of the turntable 220 is in the clockwise direction CW.

Moreover, the order in which the processor 250 reads the scale portion 221 of the turntable 220 through the sensing circuit 240 is the third luminous flux in the third scale area A26, the second luminous flux in the second scale area A25, and the first in the first scale area A24. luminous flux. Therefore, the processor 250 can determine that the rotation of the turntable 220 is in the counterclockwise rotation direction CCW.

According to the foregoing embodiments, this case provides a display device (for example: display device 100-100B and display device 200), through the design of the display device of this case, the sensing circuit and the surrounding wiring can be made close to the display area of the display device, thereby reducing the size of the display device. Displays the frame of the device.

Although this case discloses the above with detailed embodiments, this case does not exclude other feasible implementation forms. Therefore, the scope of protection of this case should be defined by the scope of the appended patent application, rather than being limited by the foregoing embodiments.

For those skilled in the art, without departing from the spirit and scope of this document, various changes and modifications can be made to this document. Based on the foregoing embodiments, all changes and modifications made to this case are also covered within the scope of protection of this case.

100,200: display device

110~110B, 210: display panel

120~120B, 220: turntable

121~121B, 221: scale part

130~130B, 230: incident light source

131~133: light emitting diode

H1: Quantity

D1: width

140~140B, 240: sensing circuit

150~150B,250:

A11~A13, A21~26: scale area

CW: clockwise rotation direction

CCW: counterclockwise direction of rotation

θ ₁ ~ θ ₂ : Central angle

Z: area square map

AA',BB': hatching

L1~L4: Detection signal

RL1, RL3, RL4: reflected light signal

T1~T3: Transistor

SRO: light sensor

FVDD’, FVDD: system high voltage

FVSS: System Low Voltage

S _RRESET : reset signal

S _READ : read signal

Column readout: read line

The content of this case can be better understood with reference to the implementation manner in the following paragraphs and the following drawings: Figure 1 is a schematic side view of a circuit block of a display device according to some embodiments of the present invention; FIG. 2 is a schematic top view of a display device according to some embodiments of the present application; Figure 3 is a schematic diagram of an enlarged area of a display device according to some embodiments of the present invention; FIG. 4 is a schematic structural diagram of a sensing circuit of a display device according to some embodiments of the present invention; Fig. 5 is a schematic side view of a circuit block of a display device according to some embodiments of the present invention; Fig. 6 is a schematic side view of a circuit block of a display device according to some embodiments of the present invention; FIG. 7 is a schematic side view of a circuit block of a display device according to some embodiments of the present invention; and FIG. 8 is a schematic top view of a display device according to some embodiments of the present invention.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

100: display device

110: display panel

120: turntable

140: Sensing circuit

A11~A13: scale area

CW: clockwise rotation direction

CCW: counterclockwise direction of rotation

θ ₁ : Central angle

Z: area square map

AA': hatching

Claims (10)

A display device, comprising: a display panel for displaying a picture; a turntable coupled to the display panel and comprising a scale part, wherein the scale part comprises a first scale area, a second scale area and A third scale area, wherein the first scale area, the second scale area and the third scale area do not overlap; an incident light source, coupled to the display panel, and used to generate a detection signal to the first Scale area, the second scale area and the third scale area, to produce a first light intensity of the first scale area, a second light intensity of the second scale area and one of the third scale area a third light intensity; a sensing circuit arranged in the display panel for receiving the first light intensity, the second light intensity and the third light intensity; and a processor arranged in the display panel, And coupled to the sensing circuit, and generate a control signal according to the first light intensity, the second light intensity and the third light intensity, so as to judge whether the turning direction of the turntable is a clockwise direction or a counterclockwise direction turn around. The display device according to claim 1, wherein the first scale area, the second scale area and the third scale area have the same area. The display device as described in Claim 1, wherein the incident light source is a backlight, the backlight, the sensing circuit, and the scale of the turntable parts overlap in a vertical projection direction, wherein the scale part of the turntable is used to make the detection signal penetrate to the sensing circuit. The display device as described in Claim 1, wherein the incident light source is a light-emitting diode, the light-emitting diode is arranged in the display panel, and the light-emitting diode, the sensing circuit, and the scale of the turntable overlapping in a vertical projection direction, wherein when the scale portion of the turntable is on the sensing circuit and the light emitting diode, the scale portion of the turntable is used to reflect the detection signal to the sensing circuit. The display device as described in claim 4, wherein when the scale portion of the turntable is located under the sensing circuit and the light emitting diode, the scale portion of the turntable is used to reflect the detection signal to the sensing circuit, and shield part of the reflected light signal of the detection signal by a touch electrode of the display device. A display device, comprising: a display panel for displaying a picture; a turntable coupled to the display panel and comprising a scale part, wherein the scale part comprises a first scale area, a second scale area and A third scale area, wherein the first scale area, the second scale area and the third scale area do not overlap; an incident light source, coupled to the display panel, and used to generate a detection signal to the first scale area, the second scale area and the third scale area field, to generate a first luminous flux in the first scale area, a second luminous flux in the second scale area, and a third luminous flux in the third scale area; a sensing circuit, coupled to the display panel, and for receiving the first luminous flux, the second luminous flux and the third luminous flux; and a processor, arranged in the display panel and coupled to the sensing circuit, and according to the first luminous flux, the second luminous flux and the The third luminous flux generates a control signal for judging whether the turning of the turntable is a clockwise rotation direction or a counterclockwise rotation direction. The display device according to claim 6, wherein the areas of the first scale area, the second scale area and the third scale area are all different. The display device as described in claim 6, wherein the incident light source is a backlight plate, the backlight plate, the sensing circuit, and the scale portion of the turntable overlap in a vertical projection direction, wherein the scale portion of the turntable is used To make the detection signal penetrate to the sensing circuit. The display device as described in Claim 6, wherein the incident light source is a light-emitting diode, the light-emitting diode is arranged in the display panel, and the light-emitting diode, the sensing circuit, and the scale of the turntable overlapping in a vertical projection direction, wherein when the scale portion of the turntable is on the sensing circuit and the light emitting diode, the scale portion of the turntable is used to reflect the detection signal to the sensing circuit. The display device as described in claim 9, wherein when the scale portion of the turntable is located under the sensing circuit and the light-emitting diode, the scale portion of the turntable is used to reflect the detection signal to the sensor The detection circuit is used, and a part of the reflected light signal of the detection signal is shielded by a touch electrode of the display device.

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