Electronic device, operation method of the electronic device, and moving vehicle

• US 10,290,266 B2
• Filed: 06/26/2017
• Issued: 05/14/2019
• Est. Priority Date: 06/29/2016
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Kurokawa, Yoshiyuki
• Primary Examiner(s): Haley, Joseph R
• Application Number:
  US15/632,459
• Publication Number:
  US 20180005588A1
• Time in Patent Office: 687 Days
• Field of Search: None
• CPC Class Codes: B60K 2360/77 Instrument locations other than the dashboard
• CPC Class Codes: B60K 2360/771 on the ceiling
• CPC Class Codes: B60K 2360/774 on or in the centre console
• CPC Class Codes: B60K 2360/777 on or in sun visors
• CPC Class Codes: B60K 2360/782 on the steering wheel
• CPC Class Codes: B60K 2360/797 at the vehicle exterior
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/22 Display screens
• CPC Class Codes: B60K 35/60 Instruments characterised by their location or relative disposition in or on vehicles arrangements of lighting devices on dashboards B60Q3/10
• CPC Class Codes: B60K 37/20 Dashboard panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G06N 3/04 Architecture, e.g. interconnection topology
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2330/023 using energy recovery or conservation
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/342 using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines

Abstract

Provided is an electronic device whose display quality is independent of environment light. The electronic device is provided with an optical sensor, an acceleration sensor, and the like so that information including the brightness of external light, the angle of external light incident on the electronic device, and the orientation of the display portion in the electronic device is obtained, and the luminance and color tone of the display portion in the electronic device are corrected on the basis of the information. As the correcting method, calculation using a neural network is performed using the luminance and color tone meeting the preference of the user as teacher data and the obtained information as input data. The calculation result is reflected on the luminance and color tone of the display portion in the electronic device, whereby an image with display quality that suits the user'"'"'s preference can be displayed.

Claims

1. An electronic device comprising:

a first display element;

a second display element;

a sensor; and

a semiconductor device comprising;

a first product-sum operation circuit including a first terminal;

a second product-sum operation circuit including a second terminal;

a first switch circuit including a third terminal and a fourth terminal; and

a second switch circuit including a fifth terminal and a sixth terminal,

wherein;

the first terminal is electrically connected to the third terminal,

the second terminal is electrically connected to the fifth terminal,

the fourth terminal is electrically connected to the sixth terminal,

the first switch circuit is configured to connect or disconnect the third terminal and the fourth terminal,

the second switch circuit is configured to connect or disconnect the fifth terminal and the sixth terminal,

the semiconductor device is configured to generate third data in accordance with first data acquired by the sensor and second data selected by a user,

the second data includes a first set value corresponding to first luminance and a first color tone,

the third data includes fourth data including a second set value corresponding to second luminance and a second color tone and fifth data including a third set value corresponding to third luminance and a third color tone,

the first display element is configured to display an image depending on the second set value with use of reflection of light, and

the second display element is configured to display an image depending on the third set value by self-emission.

2. The electronic device according to claim 1, wherein:

the first switch circuit comprises a first transistor, a second transistor, and a capacitor,

one of a source and a drain of the first transistor is electrically connected to a gate of the second transistor,

one of electrodes of the capacitor is electrically connected to the one of the source and the drain of the first transistor,

one of a source and a drain of the second transistor is electrically connected to the third terminal,

the other of the source and the drain of the second transistor is electrically connected to the fourth terminal,

the second switch circuit has a same configuration as the first switch circuit, and

the fifth terminal corresponds to the third terminal, and the sixth terminal corresponds to the fourth terminal.

3. The electronic device according to claim 2, wherein at least one of channel formation regions in the first transistor and the second transistor includes an oxide containing at least one of indium, zinc, and an element M that is aluminum, gallium, yttrium, or tin.

4. The electronic device according to claim 1, wherein:

the first product-sum operation circuit comprises;

a first memory cell;

a second memory cell; and

an offset circuit electrically connected to the first memory cell and the second memory cell,

the first memory cell is configured to hold first analog data, and to supply a first current depending on the first analog data when a first signal is input as a selection signal,

the second memory cell is configured to hold second analog data, and to supply a second current depending on the second analog data when the first signal is input as the selection signal,

the offset circuit is configured to supply a third current corresponding to a difference between the first current and the second current,

the first memory cell is configured to supply a fourth current depending on a second signal and the first analog data when the second signal is input as the selection signal,

the second memory cell is configured to supply a fifth current depending on the second signal and the second analog data when the second signal is input as the selection signal,

the first product-sum operation circuit is configured to output a sixth current obtained by subtracting the third current from a difference between the fourth current and the fifth current, and

the second product-sum operation circuit has a same configuration as the first product-sum operation circuit.

5. The electronic device according to claim 4, wherein:

the first memory cell, the second memory cell, and the offset circuit each comprise a third transistor, and

a channel formation region in the third transistor includes an oxide containing at least one of indium, zinc, and an element M that is aluminum, gallium, yttrium, or tin.

8. A moving vehicle comprising:

the electronic device according to claim 1; and

a display portion,

wherein the display portion performs display on the basis of the third data.

9. The moving vehicle according to claim 8, wherein the sensor is provided in a housing.

6. An electronic device comprising:

a sensor; and

a semiconductor device comprising;

a first product-sum operation circuit including a first terminal;

a second product-sum operation circuit including a second terminal;

a first switch circuit including a third terminal and a fourth terminal; and

a second switch circuit including a fifth terminal and a sixth terminal,

wherein;

the first terminal is electrically connected to the third terminal,

the second terminal is electrically connected to the fifth terminal,

the fourth terminal is electrically connected to the sixth terminal,

the first switch circuit is configured to connect or disconnect the third terminal and the fourth terminal,

the second switch circuit is configured to connect or disconnect the fifth terminal and the sixth terminal,

the semiconductor device is configured to generate third data in accordance with first data acquired by the sensor and second data selected by a user,

the second data includes a first set value corresponding to first luminance and a first color tone,

the sensor comprises a first sensor portion including optical sensors, a first light-blocking film over the optical sensors, and a second light-blocking film over the first light-blocking film,

the first light-blocking film is provided with first openings at intervals of a first distance,

the second light-blocking film is provided with second openings at intervals of a second distance longer than the first distance, and

one of the optical sensors, one of the first openings, and one of the second openings partly overlap with one another.

7. The electronic device according to claim 6, wherein:

the sensor further comprises a second sensor portion, and

the second sensor portion comprises an acceleration sensor.

13. A moving vehicle comprising:

the electronic device according to claim 6; and

a display portion,

wherein the display portion performs display on the basis of the third data.

14. The moving vehicle according to claim 13, wherein the sensor is provided in a housing.

10. An operation method of an electronic device, comprising:

the electronic device comprising;

a sensor comprising a first sensor portion including optical sensors and a second sensor portion including an acceleration sensor; and

a semiconductor device comprising a first product-sum operation circuit, a second product-sum operation circuit, a first switch circuit, and a second switch circuit; and

the operation method comprising;

inputting first data selected by a user to the electronic device, the first data including a set value corresponding to luminance and a color tone;

generating second data depending on illuminance and an incident angle of light received in the first sensor portion;

generating third data depending on inclination of the electronic device in the second sensor portion;

sending the second data and the third data from the sensor to the semiconductor device;

outputting a weight coefficient depending on the first data, the second data, and the third data in the semiconductor device; and

outputting fourth data depending on the second data, the third data, and the weight coefficient in the semiconductor device.

11. The operation method according to claim 10, wherein:

the first product-sum operation circuit is electrically connected to the first switch circuit,

the second product-sum operation circuit is electrically connected to the second switch circuit, and

the first switch circuit is electrically connected to the second switch circuit.

12. The operation method according to claim 10, wherein:

the first switch circuit and the second switch circuit each comprise a first transistor, a second transistor, and a capacitor, and

at least one of channel formation regions in the first transistor and the second transistor includes an oxide containing at least one of indium, zinc, and an element M that is aluminum, gallium, yttrium, or tin.