Electro-optical device and electronic equipment

Abstract

An electro-optical device includes: an electro-optical panel having a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates; a third substrate arranged on the second substrate; a fourth substrate having a flexibility and arranged on the third substrate via a spacer; a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; and a resin film provided on the fourth substrate and opposed to the third substrate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view showing the schematic configuration of a liquid crystal display device having the touch panel pertaining to the first embodiment.

FIG. 2 is a plan view showing the schematic configuration of the inner face side of the sheet substrate of the touch panel.

FIG. 3 is a graph showing the relation between the Young's modulus of the resin film and the resin strength attenuation factor.

FIG. 4 is a sectional view showing the circumstances when the user presses the touch panel with a finger.

FIG. 5 is a graph showing one example of the envelope waveform of a detected surface acoustic wave.

FIG. 6 is a sectional view showing the schematic configuration of a liquid crystal display device having the touch panel pertaining to the second embodiment.

FIG. 7 is a sectional view showing the schematic configuration of a liquid crystal display device having the touch panel pertaining to the third embodiment.

FIG. 8 is an oblique view showing the schematic configuration of a cell phone.

Claims

1. An electro-optical device, comprising: an electro-optical panel including a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates;a third substrate arranged on the second substrate;a fourth substrate having a flexibility and arranged on the third substrate via a spacer;a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; anda resin film provided on the fourth substrate and opposed to the third substrate.

2. The electro-optical device according to claim 1, further comprising: a first deflection plate arranged on the fourth substrate; anda second deflection plate arranged on the first substrate, whereinthe electro-optical panel is a liquid crystal display panel, andthe electro-optical substance is a liquid crystal.

3. The electro-optical device according to claims 1, wherein Young's modulus of the resin film is smaller than that of the fourth substrate and the first deflection plate.

4. An electro-optical device, comprising: an electro-optical panel including a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates;a third substrate having a flexibility and arranged on the second substrate via a spacer;a position detector provided on the second substrate and detecting a pressed position on the third substrate based on changes in surface waves generated on the second substrate; anda resin film provided on the third substrate and opposed to the second substrate.

5. The electro-optical device according to claim 4, further comprising: a first deflection plate arranged on the third substrate; anda second deflection plate arranged on the first substrate, whereinthe electro-optical panel is a liquid crystal display panel, andthe electro-optical substance is a liquid crystal.

6. The electro-optical device according to claims 4, wherein Young's modulus of the resin film is smaller than that of the third substrate and the first deflection plate.

7. An electro-optical device, comprising: an electro-optical panel including a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates;a third substrate arranged on the second substrate;a resin film arranged on the third substrate via a spacer; anda position detector provided on the third substrate and detecting a pressed position on the resin film based on changes in surface waves generated on the third substrate.

8. The electro-optical device according to claim 7, further comprising: a first deflection plate arranged on the resin film; anda second deflection plate arranged on the first substrate, whereinthe electro-optical panel is a liquid crystal display panel, andthe electro-optical substance is a liquid crystal.

9. The electro-optical device according to claim 7, wherein Young's modulus of the resin film is smaller than that of the third substrate and the first deflection plate.

10. The electro-optical device according to claim 1, wherein the Young's modulus of the resin film is 4 GPa or less.

11. The electro-optical device according to claim 1, wherein the resin film is polyethylene.

12. Electronic equipment that comprises the electro-optical device according to claim 1.

13. Electronic equipment that comprises the electro-optical device according to claim 4.

14. Electronic equipment that comprises the electro-optical device according to claim 7.